Tuesday, December 9, 2008

How You Can Increase The Lifespan Of Your Projector Bulb Or Lamp

How You Can Increase The Lifespan Of Your Projector Bulb Or Lamp
By Clifford Tan

The replacement of projector bulbs is an all-too-frequent occurrence for anybody that has owned a home theater projector for any length of time. While a two thousand hour lifespan may sound like a lifetime to some people, rest assured it is not long before the projector lamp will need replacing. There are however, some general tips that can help to expand the life of a headlamp for the projection unit.

Do not touch the lamp with bare hands
One of the most frequent problems encountered is people replacing the bulbs with their bare hands. While this is fine for an ordinary light bulb, it is not a good practice for a projector lamp. The lamp in a projection unit burns much hotter than any regular light bulbs. The effects of touching it with bare skin are equally magnified and problematic.

Touching a projector bulb with the bare skin leaves traces of oil on the lamp surface. While this may seem a very minor detail, it is detrimental both to the bulb and the quality of the resulting multimedia display. The oils will get burnt onto the lamp and drastically reduce the lifespan. As the oil is baked into the surface, it actually diffuses the light being projected, reducing the lumens actually being sent to the refractive surfaces. The light will not be enough to project the image that has come to be expected from the home theater projection system. While the problem may not be noticeable at first, over the course of a little time, the quality will degrade to the point of not being viewable.

Turn off the projector power after turning off the lamp
It is highly recommended to turn the power on the projector to the off position only after having turned off the lamp and allowing it to cool. This will allow the cooling fans to do the job they were designed to do. While rapid cooling and heating result in repeated contractions and expansions of the bulb filament, it is much better that it be done more quickly with the cooling fans. Likewise, turning the projector on and allowing the cooling fans to run for a moment before turning on the lamp will help as well. This will add hours to bulb life expectancy and allow for longer hours of viewing pleasure on the home theater projection system.

Constant Movements
Constantly bumping or moving the projector, especially while it is hot can be very detrimental to the projector lamp. The filament in the bulb loses almost all tensile strength when it is heated during normal usage. It is much the same as the filament in a camp lantern. The principle is the same; the filament effectively becomes almost the same consistency as ash, making it extremely vulnerable to damage when it is hot. Even after proper cooling, the lamp filament is very sensitive. Care should be taken when moving the projector for whatever reason. While it is always a good idea to be careful with electronic equipment, some aspects of the home projector are actually a bit more sensitive.

It will usually be necessary to move the projector when cleaning the filters. As always, it is a good idea to move it carefully without jerking it around or bumping it any more than needed. Taking an extra moment or two to check the projector mount and make sure it is still securely fastened can also be beneficial and prevent slips and movement which may otherwise be harmful.

With a little care and a little preventative maintenance, the projector lamps will still need to be changed, but not nearly as often.

Note: This article may be republish for use in websites as long as the author bio and active hyperlinks are kept intact.

Clifford Tan, a Home Theater enthusiast and owner of the website Home Projector Advisor offering projector reviews, advice and many useful tips and hints to business and home consumers looking to purchase a home projectors. To find out alot more information about home projection system, visit the site http://www.home-projector-advisor.com

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Monday, November 24, 2008

Some Things Your Projector Dealer Might Not Tell You

Some Things Your Projector Dealer Might Not Tell You
By Clifford Tan

A salesman is a salesman. He does not make a living if he does not sell something. So it may sometimes happen that a salesman or a dealer will not tell the buyer all of the relevant facts about a given product. We have tried to list enough of them here to give you a general idea of what to look for and what to ask.

Bulbs or the Headlamp
This is probably the one thing that gets overlooked more than anything else. The bulbs are an expensive part of the home theater system and need to be checked out carefully before purchasing a projection unit. What is the projected bulb life? How many lumens does it generate? These are specific questions that should generate specific answers that the projector dealer may not otherwise mention.

Contrast Ratios
Contrast ratios are something else that needs to be considered. The projector dealer may or may not know the statistics regarding a specific projector unit, but what about the ambient lighting in the room where the projector will be used. Is the light source constant or is it varied? Properly factoring in the light source in the room where the theater projector will be set up is not something that many dealers or salesmen will volunteer to do for the buyer.

Screen
The screen is also an important part of the whole home theater experience. Which screens work best with which types of projectors is likely something the salesman or dealer is not going to know and will not tell you without prodding. Having the information beforehand can save a lot of time and grief when shopping for a home theater projector.

Mounting
What types of mounts are included with the projector is something they may or may not refer to at the projector dealer, but what else is there to consider with mounts? Is the projection unit prone to overheating when mounted on a shelf mount? Is it compatible and able to be mounted in the proper place for the distances in the room where it will be used? Another factor in regards to the mounting of the multimedia projector is the hazard of creating a keystone effect by mounting the projector incorrectly or off center. What kind of variance do the optic lenses on the projector provide to prevent this? Is there only a vertical adjustment or does it have both horizontal and vertical optic controls? Does it only have the keystone adjustments or does it provide digital adjustment as well? Mounting the multimedia projector properly is a key factor in being able to properly enjoy a high quality picture with the home theater projection unit.

Is this the right projector for me?
Is the projector really compatible for the uses that are needed or is the salesman or dealer just trying to push a product off on the consumer? Knowing which projectors are better for what types of displays is something that the dealer may not even know about. Different home theater projectors have different uses. Some work better with movies, videos and video games, and some work better for still-multimedia presentations. Being knowledgeable about which projector does what can save a lot of hassling with the uninformed salesman or the dealer who just wants to move projectors out of his store.

To be forewarned is to be forearmed. No matter how well prepared the salesman is or how honest the projector dealer is, they have many different products that they have to know a lot about. Even the salesman with the best intentions will not know everything about all of the home theater projectors available. There are many things the projector dealer will not tell you.

Note: This article may be republish for use in websites as long as the author bio and active hyperlinks are kept intact.

Clifford Tan, a Home Theater enthusiast and owner of the website Home Projector Advisor offering projector reviews, advice and many useful tips and hints to business and home consumers looking to purchase a home projectors. To find out alot more information about home projection system, visit the site http://www.home-projector-advisor.com

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Sunday, November 23, 2008

Tips on Comparing Prices on Projectors

Tips on Comparing Prices on Projectors
By Jim Gelder

Buying a projector is an investment that you want to be sure you make wisely. So taking the time to do some comparison shopping when it comes to prices is simply a smart thing to do and something you certainly wont regret.

There are several ways you can go about comparing prices on projectors. The first is to visit electronics stores and office supply stores that sell projectors and check out their prices in the stores. This is an especially good method during sales. Its also a great way to get a good deal locally because many stores will offer to beat their competitors best price by a certain percentage, which can save you even more money.

You can also research and compare prices on projectors online. Doing your projector price comparison shopping online makes it possible for you to check out a much larger number of prices on projectors than you can do by going from store to store. This will also make it possible for you to check out the prices on a wider number of brand name projectors and even look into the prices of used projectors. Online auction sites such as eBay are great places to compare prices on used projectors.

Consumer report magazines are also a good resource for comparing prices on various projectors. These reports have the advantage of also rating the projectors, so you can compare quality as well as prices on projectors.

This is an important part of comparing prices on anything, whether its projectors or cars. You want to get the most value for your money, and that means that many times a medium priced item is actually a better value than a higher priced one because it has more features than a stripped down top brand name one has.

Also, even before you start comparing prices on projectors, its a good idea to have a budget in mind for what youre willing to spend for your projector. This will help you focus your price comparison, although you dont want to rule out looking into projectors that may cost more than youve budgeted for because you may run into an unexpected bargain as you do your research.

And if the thought of doing all the research needed to compare prices on projectors sounds like work to you, remember that at least half the fun of making any purchase is in the search! Make a game of it and see just how great a projector you can find for the least amount of money, thanks to your savvy comparison shopping. Then take those savings and splurge on something just for you!

Jim Gelder is a contributing writer for projectorian.com a website dedicated to offering information about projectors and projector rentals and also features a listing of local companies that offer LCD projector rentals, New York projector rentals and more.

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Saturday, November 22, 2008

Digital LCD Projectors

Digital LCD Projectors
By Ken Marlborough

Digital projectors are the modern replacements for the rather traditional transparency projectors. Transparency projectors worked by shining light through a semi-transparent material. Digital projectors, by contrast, project a digital image directly from a computer through a lens on to a screen.

LCD (Liquid Crystal Display) digital projectors are much lighter and more portable than their CRT (Cathode Ray Tube) versions, making them widely popular. With the advent of new LCD technologies, digital projectors have been developed which have very clear and crisp fidelity even at large projection sizes. The LCDs used in digital projectors are approximately the size of a small color slide, and in fact the projectors operate very much like a traditional slide projector. The main difference is that the slide is constantly changing.

A Digital LCD projector has its light source contained within its base. It projects light upwards through the transparent image (which sits on a glass stage) to a lens on the top (head) of the unit and out onto the projection screen. In other words, the light shines through the image to project it. These projectors work well with printed film transparencies or an LCD panel computer display and provide bright, sharp images.

Slightly higher end Digital LCD Projectors can be used for Cinema/exhibition, Post-production, On-screen advertising, Digital film mastering, Multi-media theatrical productions or other large entertainment venues. Most of the recent Digital LCD projectors can be installed with existing film projectors and also provide an interface for theatre automation equipment.

The future of digital projectors is exciting, with new technologies constantly being developed. As more and more theatres switch to digital projection, consumers cannot help but reap the benefits. As these technologies become more affordable they will inevitably find their way into home systems and allow each of us to experience the joy of a full theatre projection in our own home.

LCD Projectors provides detailed information on LCD Projectors, LCD Projector Rentals, LCD Projector Lamps, LCD Video Projectors and more. LCD Projectors is affiliated with Cheap LCD TVs.

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Thursday, October 30, 2008

Projector Screens

Projector Screens
By Jennifer Bailey

When there is a projection of a video or an image, the presence of a projector screen is inevitable. A projector screen is a specially made flat screen to be hung on the wall or erected vertically, where the image is reflected, so that the image size is enlarged. The surfaces of such screens are usually rough, and colored white.

There are a number of types of projector screens. They are home cinema projector screens, portable projector screens, manual projector screens, electric projector screens, fixed frame projector screens and also movie board home cinema projection screens.

Home cinema projector screens are the screens with the viewable screen central to the eye. Some of the products that are popular include: CinElpro Electric Projection Screens (230cm), Cinema Electrol Projection Screens (190cm), Diplomat Channel Fix Electric Screens (290cm) and Diplomat Channel Fix Manual Video and Screen Formats (290cm).

Portable projector screens are for temporary positioning or for occasional use. These screens are easy to carry to various places. Most of the screens are foldable and are usually carried in coils. Some of the products that are popular are: Fast fold (427cm), Leader Portable Floor Screens (177cm), Movielux Compact Portable Floor Screens (160cm), Picture King Standard and Video Format Tripod Screens (244cm), and Professional Tripod Screen (240cm).

Manual projector screens can be pulled down and recoiled back from the ceiling, or wall mounted. Some of the products are Proscreen Manual Wall Screens (280cm) and Slim Screen Manual Wall Screens (200cm).

Electric projector screens have motorized drop and retraction through the use of wired switches or remote controls.

Fixed frame projector screens are permanently fixed frame screens. Some of the products are Cinema Contour Professional Framed Projection Screens (488cm) and Designer CineFix Home Cinema Projection Screens (200cm).

Projector Screens provides detailed information on Projector Screens, Video Projector Screens, Home Theater Projector Screens, Electric Projector Screens and more. Projector Screens is affiliated with Large Format Flatbed Scanners.

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Friday, October 17, 2008

Consumer Electronic Information: The Basics of the DLP Projector

Consumer Electronic Information: The Basics of the DLP Projector
By Simon Canfield

Projectors have come a long way in the past few decades. The desktop fossils that were once used to show home moviesor classroom filmstrips are a thing of the past. With todays technology, you can now experience a projected movie that emulates a full-blown theater flick, without thetime, effort and hassle of standing in line at the local cinema.

DLP projectors also known as Digital Light Processing projectors have brought the proverbial silver screen to the home front. The fact that some theaters actually use this type of technology for feature movie projection makes this truer than you might imagine. After being digitally converted and placed on an optical disk much in the same way as DVD technology is produced the images are fed intothe projector and sent to the movie screen. The main difference is that DLP projectors offer a high definition experience, as opposed to that of a DVD. The result is a picture that very nearly rivals the quality of a 70mm projection, but without the imperfections.

The color accuracy of the DLP system is outstanding, with an end result that beats LCD technology. Some of the advantages that make a DLP the projector of choice are its low power consumption, compactness, micro-mirror construction (which is responsible for the high level screen resolution), high contrast and brightness. All in all, this is the closest that anyone can come to having a bona fide cinema within the confines of their home.

With every set of pros, youll always find some cons lurking in the shadows. Such is the case with the DLP projector. For those who are particularly sensitive to certain visual effects, the DLP design produces a type of rainbow effect, which could serve as a distraction when looking from one side of the screen to the other during viewing. This will play out as a brief splash of colors, which is simply a result of the type of technology thats used in the production of the DLP. Most people dont even notice this color display, but those who are in tune to that sort of thing may see it as an annoyance.

While this is also true for LCD projectors, consumers mightbe disappointed to know that DLP projectors need to have their light source changed after every 1,000 to 2,000 viewing hours. All in all, though, this is nothing new and, when you consider the higher quality that this type ofsystem offers, it shouldnt be seen as much of an inconvenience at all.

Perhaps the most inhibitive aspect to the acquisition of a home theater system, such as the DLP, is that the cost willtypically fall within the range of $5,000 to $10,000 for the mid-range systems, once you purchase everything that youll need in order to complete the set-up. In addition to that, youll have to consider the cost of the rest of your home theater system, since these figures only factor in the DLP expenses.

For those who can afford to do so, the DLP projector is an excellent investment, despite its few downfalls. While no projection system is perfect, DLP is currently the most popular set-up on the market and provides a powerful theater experience for those who arent inhibited by space or finances.

(c) 2005 Simon Canfield - All Rights Reserved

Simon Canfield is a hi-tech enthusiast and freelance author.

AllAboutHeadPhones.comBigScreenTVsecrets.com

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Wednesday, October 15, 2008

Learn All About Proper Projector Mount

Learn All About Proper Projector Mount
By Clifford Tan

After purchasing a home theater projector, unless it is a portable projector and a portable screen, it is necessary to mount the projector and screen so that the picture can be properly transposed onto the theater projector screen.

Hopefully, by this point in time, the relevant factors for setting up a home theater system have been well planned but that is not always the case.

Maybe the home theater was received as a gift, or maybe a spouse or friend purchased the projector without considering how it was going to be used.

The projector mounts and the theater projector setup for both the screen and the projector unit are as important as any factor in order to get the optimal performance quality from a home theater projection system.

Screen Mount

Many screens for home theater systems are portable, meaning they can be easily stored away when they are not in use. Some of the projector screens will have to be mounted to either a wall mount, a floor mount or in some cases, to a ceiling mount.

What factors should be considered when deciding where to mount the projection screen?

Like any home furnishing, the home theater projector screen is part of the interior design or dcor of the home, or at least of one particular room. If there are children in the home, or perhaps pets, it may be advisable install the projector screen mounts on the ceiling. This can often be done quickly and easily as there is usually no wiring needed for the screen. The projector mount has different needs which must be considered before mounting.

The home theater projector must be setup at a certain distance to get the best quality from a home theater system, whether at the minimum distance, the maximum distance or somewhere in between. Keeping the distance constant will insure better consistency and better quality experiences from the home theater projection unit.

The Projector Unit

Mounting options for a home projector vary, but the most common types are wall mounts, ceiling mounts and recessed mounts.

The wall mount is perhaps the most common mount used for the screen and projector. It is important to consider the wiring needs when deciding which mount to use. For a wall mount, wires are frequently exposed along the wall. They can sometimes be hidden or fished through the wall to be more aesthetically appealing.

The ceiling mount is also very popular for the home theater projector. The two major factors to be considered for a ceiling mount are the clearance from the home theater projection unit as well as the swivel capabilities of the ceiling mount itself. If there is not sufficient clearance to mount the projector under the ceiling mount while allowing it to be moved, it will be difficult to properly lineup and adjust your home theater system. Wiring can also be a factor here, but usually there is enough room in the ceiling to allow for easy access to wire the unit.

If it can be accomplished, the recessed mount is a favorite among many home theater owners. The recessed mount is a recession (Like a shelf) built into an existing wall. This alleviates unsightly wires and offers perhaps the best protection for your home theater projector.

Note: This article may be republish for use in websites as long as the author bio and active hyperlinks are kept intact.

Clifford Tan, a Home Theater enthusiast and owner of the website Home Projector Advisor offering projector reviews, advice and many useful tips and hints to business and home consumers looking to purchase a home projectors. To find out alot more information about home projection system, visit the site http://www.home-projector-advisor.com.

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Monday, October 13, 2008

Understanding Native Resolution For Your Home Theater Projector

Understanding Native Resolution For Your Home Theater Projector
By Semore Bernstein

What is Native Resolution for your Home Theater Projector?

To understand what is native resolution, lets start with an understanding of the concept of 'resolution'. Resolution is concerned with the mapping of the information within a picture or image by the dot area.

The smaller the dots, and the more densely packed it is, the greater the resolution, since the mapping of dots as measured in pixels constitutes the data for reproducing the images in video outputs of home theater and other viewing systems. This data processing capability of the projector, as measured in pixels, is what constitutes native resolution.

For high definition home theater projector pictures with good resolution, both the native resolution of the projector should match the resolution of the video signal or video input, failing which, distortion of the images is likely. Native resolution of home theater projectors is measured in two dimension figures with current capabilities ranging from (640480, 800600, 1024768, 16001200) for 4:3 image aspect ratios and the occasional odd resolutions like 12801024.

Thus, if projectors of 1280X 1024 native resolution were to map a video signal of resolution 1024 X 768, there would errors and likely distortion in the image. To effectively combat or otherwise provide for different standards, most home theater video projectors come with capabilities of multiple resolution standards, though it is most likely to be multiples of the lower resolution values.

Advice on Home Theater Projectors
Advice on Home Theater Projector Displays
Advice on Home Theater Projector Mounts

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Friday, October 10, 2008

Home Theater Plasma TV VS Projectors

Home Theater - Plasma TV VS Projectors
By Jakob Culver

Many homeowners are struggling with an important, electronic question: What is the ideal display for my home theater? Many people have fought this debate, but I'll try to make clear some important considerations.

The most important detail to consider when deciding between a projector and a large plasma television is ambient light. A room with lots of windows presents a problem for a projector because every little bit of ambient lighting degrades the projected image. The ideal environment for a projector is one where you have total control over the lighting. If your home theater uses a projector, you are limited to using it when you can eliminate other light. A plasma screen can be used anyplace, anytime.

Assuming your home theater has blackout curtains, or exists deep underground; let's examine differences between a plasma television and a projector. One advantage of a projector is that you can get a much larger picture than is available in plasma. Projectors can produce images comparable to an 81-inch screen and larger. This just isn't possible with a plasma screen. However, plasma's have the advantage of not needing any amount of space. A projector must have a long enough corridor to project its image on the wall or screen. To get an 81-inch or greater image, you need a decent distance between the projector and the target. Second, a projector's image is dependent on more than the quality of the projector; you must be projecting onto a specialized surface or you lose detail. A top of the line HD projector with a very high native resolution would be wasted if you were just projecting the image onto a wall. You need an equally high quality screen with features such as a matte finish to eliminate reflection and glare. A plasma display requires no additional equipment.

Overall, a projector has the potential of creating a beautiful image, but it needs too much to work effectively. If you're creating a private movie theater with lighting control and an investment in a screen, mounting equipment, and blackout curtains, then a projector is your piece of equipment. For everyone else, I suggest a plasma television.

Jakob Culver is founder of the website http://www.plasmatvarena.com providing information, articles and reviews about plasma tv's. To find more articles like this one visit the site http://www.plasmatvarena.com.

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This article may be reprinted for use in websites provided that the information box is kept intact.Email notice of intent to publish is appreciated but notrequired: millenniumonlinemarketing@hotmail.com

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Wednesday, October 8, 2008

LCD Projectors

LCD Projectors
By Ken Marlborough

A LCD (Liquid Crystal Display) Projector is the modern version of the slide projector and overhead projector. Unlike CRT (Cathode Ray Tube) projectors, the LCD projector does not function according to the traditional projection-tube system.

The LCD Projector usually contains three separate LCD glass panels - one each for the red, green, and blue components of the video signal. The LCD chip is transparent, and when a powerful light source is passed through it, each individual pixel transforms the light and projects the image or data through a lens onto the screen.

The LCD Projector technological revolution started around the mid-1990s, when manufacturers began to use microdisplays and merge illumination and imaging in one device. Following this development, Compaq introduced one of the first ultra-lightweight data projectors in 2000 - the MP1400 using the DLP (Digital Light Processing) technology from Texas Instruments. Most LCD Projectors today support VGA output at resolutions ranging up to 800x600 and 1024x768. They are also usually capable of projecting standard video from a VCRs, DVDs, and cable boxes; and many of them are specialized for use at home, known as Front-Projection TVs.

The main advantage of the LCD projector is that since the LCD chip is miniature in size, the whole unit is quite compact, which is very practical, especially for mobile professionals. Most LCD projectors are also typically capable of producing 2,000 to 2,500 ANSI lumens brightness with 1024 x 768 VGA resolution, resulting in better image quality. Power consumption is also relatively low. And, in comparison to CRT Projectors (which are still manufactured), LCD versions are quite inexpensive. For example, the Sony VPL-CX1 Superlite LCD Video Projector only costs around $2,000, but is still capable of producing super image quality.

LCD Projectors provides detailed information on LCD Projectors, LCD Projector Rentals, LCD Projector Lamps, LCD Video Projectors and more. LCD Projectors is affiliated with Cheap LCD TVs.

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Monday, October 6, 2008

Understanding Projector Screens: Be Careful You May End Up With TOO Bright An Image!

Understanding Projector Screens: Be Careful, You May End Up With TOO Bright An Image!
By Andrew Ghigo

Today's compact yet powerful front video projectors may leave you with a too bright an image to watch! This being especially so if you intend to watch a projected image in a darkened room which after all, is most often the case with a home theater setup.

Defining Screen Gain

Prior to proceeding with our discussion, it is important that one has a full understanding of what the term screen gain is all about.

It may sound strange that we talk about gain when in reality a projector screen is nothing more than a passive device. Yet there is - it is all a question of how the screen surface distributes the reflected light.

Screen gain is a measurement of the reflectivity of the screen surface. It measures the ability of the screen to direct incident light back to the audience.

The gain number represents the ratio between incident light and reflected light. A flat matte white surface has a gain of approximately 1. A gray screen has a gain less than 1 and therefore, it attenuates incident light. Reflective screen surfaces have gains greater than 1; these projection screens direct more incident light back to the audience.

Gain is always measured in front and perpendicular to the screen at the point of maximum brightness; this represents peak screen gain and occurs at the zero viewing angle perpendicular to the screen surface.

For a screen with gain greater than one, the gain drops as one moves to the side and view the screen at an angle to the perpendicular drawn from the center of the screen. The angle at which screen gain falls to half the peak is referred to as half gain viewing angle. A person viewing the screen from this angle will see the image half as bright as the person seated at the center. The more one moves further away from the center, the dimmer the projected image will be.

The higher the peak screen gain, the narrower the supported viewing angle. This is the price one has to pay for a higher screen gain - the higher projector screen gain at the center is in fact achieved by directing more light towards the center viewing positions rather than allowing for a uniform reflected light over a wider angle of view.

Projected Image Brightness:

Matching the projection screen gain with the ambient light and the video projector output is essential if you want to ensure that you will end up with a correct level of projected image brightness.

This is an extremely important issue. Do not forget that a basic requirement for a great movie experience is a comfortable environment. This means that the time one spends watching a movie should be as comfortable as possible. Exposure to a bright projected image is uncomfortable on the eyes - even when this is for just a few minutes, least imagine when watching a two-hour movie.

A Tricky Matching Process!

Ambient Light Conditions, Image Brightness & Screen Gain

A projected image is at its best when viewed in total darkness - this helps take away any visual distractions - rendering it easier for the viewer to get deeper immersed into the movie action.

In the home, achieving a completely darkened room is almost impossible except in the case of the dedicated home theater setup. The amount of ambient light present has an impact on the resultant projected image contrast. This calls for the need to increase the image brightness to maintain the correct level of image contrast.

The tricky issue is to arrive at the correct level of image brightness for a pre-set level of ambient light. This in view that projected image brightness is a function not only of the projector output, but also of the screen gain, and image size.

The explanation that follows should help you get a better understanding of the relationship that exists between these three inter-related parameters.

Display Brightness and Screen Gain

The brightness output level of your projector is a measure of the projector output power in terms of light intensity. Please keep in mind however that the resultant projected image brightness is a different issue. Image brightness falls in proportion to the area of the projected image size - the bigger the projected image is, the dimmer it will look for a fixed level of projector brightness.

The projected image brightness - more specifically the Luminance level for a projected image, is a measure of the light reflected from the projector screen area. It is measured in foot-Lamberts, and is defined as:

ANSI-lumens of your projector divided by the square footage of Screen.

(Note that one foot-Lambert is equal to 1 ANSI lumen per square foot.)

To arrive at the actual level of light reflected from the screen surface, the above result must be multiplied by the projector screen gain.

A useful reference here is what has been defined as 'sufficient brightness' by the Society of Motion Pictures and Television Engineers, also known as SMPTE.

In standard 196M, the SMPTE determined sufficient brightness for showing motion pictures in a darkened room using a unity gain matte white projector screen, as 12 - 22 foot-Lamberts. In practice, the luminance target level is set to about 16 foot-Lamberts, while the average bright scene brightness level in a movie theater is typically 60% to 75% of this target value.

Display brightness is in itself an entirely subjective term; whats more, it is all relative to the amount of ambient light falling on the screen surface.

The following rules of thumb would surely come to assistance in this respect:

  • The contrast ratio between the projected image and the ambient light level falling on the screen should be at least 5:1. This is necessary for the eye to perceive a real impression of brightness. If this contrast ratio is not achieved, the projected image will not be considered of adequate brightness level.

  • When viewing takes place under normal ambient light conditions, the luminance level should be close to 50 foot-Lamberts. This level of luminance is derived from the fact that SMPTE indicated a target level of image brightness for a CRT TV as 50 foot-Lamberts, this in view that a TV is normally viewed under normal ambient light. One may argue that TV is a totally different technology this is true, but this target level for image brightness or luminance, still holds good for most circumstances.

    How does all this translate in practical terms?

    If one is viewing an image in typical very low ambient light conditions (say less than 2 foot-candles - equivalent to approximately 22 Lux), then the minimum required light level illuminating the screen surface should be around 10 foot-candles to achieve sufficient image contrast.

    For a matte white projector screen surface with a screen gain of one, this translates to a minimum of 10 foot-Lamberts in terms of light reflected from the screen for image brightness. This is close to the SMPTE typical requirement for average luminance when viewing pictures in a darkened room.

    Similarly, if viewing were to take place under normal ambient light room conditions (typically 10 foot-candles or 110 Lux), applying our first rule of thumb to achieve the required contrast level would result in a luminance level of 50 foot-Lamberts (approx. 540 Lux) for the same matte white projector screen surface. This is also in line with the target luminance level detailed in rule 2 for viewing under normal ambient light conditions.

      Note:
    • Light illuminating a surface is measured in lux (Lx = lumens/m2), or foot-candles.
    • Light reflected from an area (luminance) is measured in candelas/m2 (cd/m2) or foot-lamberts (fL).

    Now, lets consider as an example what will happen with different projector screen gains for say a given 1000 ANSI-Lumens projector and a 100 diagonal screen size.

    Projector Screen Gain 1 1.5 2Image Luminance in foot-Lamberts304560

    It is clear that our 1000 ANSI-Lumens projector would produce a too bright an image when the latter is viewed in a darkened room, even when using a standard matte white projector screen with unity gain. Similarly, use of this projector in conjunction with a projector screen surface having a gain of 2 may result in a too bright an image even when viewing takes place under normal ambient light conditions.

    Andrew Ghigo A Telecoms/Electronics engineer by profession, with specialization in digital switching and telecoms fraud management systems.

    Editor and publisher of http://www.practical-home-theater-guide.com - a site dedicated to all home theater enthusiasts with the scope of serving as a comprehensive home theater guide to home theater systems, product reviews and home theater design.

    This article is an excerpt from a series of guides appearing under thehome theater screens section of the site.

    Article Source: http://EzineArticles.com/?expert=AndrewGhigo
    http://EzineArticles.com/?Understanding-Projector-Screens:-Be-Careful,-You-May-End-Up-With-TOO-Bright-An-Image!&id=40540

  • Wednesday, October 1, 2008

    Used LCD Projectors

    Used LCD Projectors
    By Ken Marlborough

    Apart from the usual used LCD projectors, those which have been used from some considerable amount of time by someone and are now for sale, there are some other categories of used LCD Projectors.

    One of these categories is called demo projectors - projectors that have been used sparingly in-house for customer demonstrations. The majority of demo projectors generally have 90% or more of the original lamp life remaining at the time of resale. Demo models that are still in production ship with a full manufacturer's warranty. The length of warranty varies on demo models that are no longer in production.

    Another category is refurbished projectors - projectors are most often the source of best projector deals. These projectors have been returned to an authorized factory service center and restored to meet manufacturer's original quality standards. Refurbished projectors feature new lamps, yet the warranty varies by manufacturer.

    Yet another category is bargain buys - projectors that are new, factory-sealed units and are priced less than US $1500. These projectors are typically SVGA resolution, are portable, and feature an adequate amount of brightness for most any environment. Because of their budget price, the length of warranty on these projectors varies.

    There are several Web sites that sell used LCD Projectors over the Internet. However, when buying over the Internet, one should not only look at the security of the mode of payment, but also about the vendor who is selling the product on the Web site. Generally, some people who have bought a product from a vendor leave a comment about the quality of service and product sold by the vendor; these comments are often very helpful in eliminating the vendors with a poor track record.

    Finding a used LCD Projector is not difficult, what is though, is narrowing down to decide on a projector that meets the requirements, comes from a vendor who can be relied upon, and is at available at the best price among all the Web sites on the Internet that sell used LCD projectors.

    LCD Projectors provides detailed information on LCD Projectors, LCD Projector Rentals, LCD Projector Lamps, LCD Video Projectors and more. LCD Projectors is affiliated with Cheap LCD TVs.

    Article Source: http://EzineArticles.com/?expert=KenMarlborough
    http://EzineArticles.com/?Used-LCD-Projectors&id=405803

    Monday, September 29, 2008

    Choosing a Digital Projector

    Choosing a Digital Projector
    By Luke Kent

    There are tons of digital projectors available and they are constantly dropping in price. However, when choosing a projectorfor yourself or your school there are a few practical things you should remember.

    When choosing a projector you need to consider under whatcircumstances will you be presenting slide shows. The strength ofa projector's brightness is measured in units called lumens. Projectors range between 650-5000 lumens. The higher the lumensthe brighter the projector. Projectors that are less than 1000 lumens may not be great in a room with a lot of ambient light.For a classroom you should consider buying a projector with greater than 1000 lumens. If the projector will be used forlarger presentations, for 100 or more people, a projector withgreater than 3000 lumens may be needed.

    A great accessory to your projector is a wireless mouse. Thesehave dropped considerably in price and allow the educator toface their audience when presenting the slide show. Whenchoosing a wireless mouse choose one that has a long rangeso that you can walk around when presenting.

    Many projectors also come with remotes that help the presentermake adjustments to the slide shows quickly during the presentationwithout having to fiddle with the projector.

    Remember when buying a projector analyze you needs first. You maynot need to spend as much as you think or you may need to spendthe extra cash to get a projector that suits your needs.

    For more product reviews and teaching tips visit our site below.

    Mr. L. Kent is an experienced educator and the lead consultant of http://MrKent.Net - Education Technology Made Simple. Feel free to visit the site and/or subscribe to our fantastic monthly newsletter at http://mrkent.net/php/?p=subscribe .

    Luke Kent provides assistance to other educators by offering his interesting seminar, Teaching with Technology: A Fun Workshop for Technology Challenged Teachers. To book a seminar or a consultation visit http://MrKent.Net .

    Article Source: http://EzineArticles.com/?expert=LukeKent
    http://EzineArticles.com/?Choosing-a-Digital-Projector&id=368724

    Thursday, September 25, 2008

    Choosing A Conference Room Projector

    Choosing A Conference Room Projector
    By Jim Gelder

    When it comes to choosing a conference room projector, you probably want to run and hide! Thats because most of us dont know much about projectors to begin with and dont know the first thing about how to select one thats appropriate for a conference roomor any room for that matter.

    Thankfully, theres the Internet. Within minutes, you can have all the information on choosing a conference room projector that you could ever want.

    Sorting through all that information, though, can seem overwhelming. So its good to have some questions in mind as you do the research necessary to find the perfect projector for your conference room.

    Some questions you want to ask are:

    How difficult is operating the projector?
    Is the projector portable or will it need to have a permanent mounting? Which type fits my conference room needs best?
    What types of presentations will the projector be used for?
    How much does the projector cost?
    Does that cost fit my for buying a new conference room projector?
    Is there a service contract available for the projector?
    What is the repair policy for the projector?
    Is the company Im thinking of buying the projector from a reputable and reliable one?
    Will the projector require any special maintenance or periodic service checks?
    Are any special supplies needed for the projector?
    Is the size appropriate for the conference room?
    If its portable, how much does it weigh?
    Should I rent, lease, or buy?
    Is the quality of the brightness satisfactory for the size of my conference room?
    Do I need to save the receipt so that I can take the purchase off on my taxes?

    These are just a few questions to help you on your way to purchasing (or leasing) a conference room projector. Just remember that cost does not always indicate quality. You can buy a wildly expensive projector that is all wrong for your needs. The opposite is true too: you can get a great projector that fits your needs for a moderate, or even small, investment.

    The trick is in researching projectors and taking the time to read some consumer reviews that are easily found on the web. Before you do anything, though, have a budget in mind and have some idea of what youll be using your projector for. This will help guide your research and make it go more quicklyand be much more effective to boot!

    Jim Gelder is a contributing writer for http://www.projectorian.com a website dedicated to offering information about projectors, projector rentals and also features a listing of local projector rental companies

    Article Source: http://EzineArticles.com/?expert=JimGelder
    http://EzineArticles.com/?Choosing-A-Conference-Room-Projector&id=113105

    Looking For A Cheap LCD Projector TV?

    Looking For A Cheap LCD Projector TV?
    By Zach Parker

    Knowing what brightness and contrast ratios are best for your lcd projecting needs is probably going a bit too far, but it will definitely help if you do. Used lcd projectors may be a wonderful investment; just because they have been viewed by someone else does not mean it is in poor condition. Lcd projectors are prone to the screen door effect which means certain images may appear as if being viewed through mesh or fine screen. Choosing the lcd projector that is versatile, reliable, and portable may be a tall order to fill if you don't know alot about projectors. In contrast to some of the other lamps in lcd projectors, halogen lamps burn at a steady rate and have a consistent brightness throughout the lamp life. Knowing what is necessary in your lcd projector and how often those features will be needed can help you decide which one is right for the job.

    Lamp life for metal halide bulbs in lcd projectors normally range from 750 to 4,000 hours or more depending on how it is used. A review of the upcoming digital projectors is really exciting due to new technologies constantly being developed for the industry. Lcd projectors are versatile, reliable, and portable; this is why they have become really popular over time; they can be transported anywhere. These projectors deliver a better picture than the lcd television sets that are found in most modern homes. Used lcd projectors purchased on ebay normally have a picture on the bidding page; this might allow you to determine the condition before you make the purchase.

    These lcd projectors have a variety of functions for high picture quality and network compatibility is also included. Just about all projectors use the same kinds of bulbs for illumination; most people are shocked to find out that the bulb used is not that expensive. When dealing with lcd projectors you might find that it will provide several incredible viewing opportunities for you and other guest viewers. When dealing a lcd projector for the first time; make sure you read the step by step instructions on how to operate the equipment.

    A digital lcd projector of the present has an lcd approximately the size of a small color slide and works similar to traditional slide projectors. Lcd projector rentals require the user to know what size of the audience, viewing angle, viewing distance, room brightness, and location it will be used. Lcd projector rentals are a big business for those that only need to project for presentations or events on a sporadic basis for home or business.

    Still looking for a cheap LCD projector TV ? Try visiting LCD-Projector-Sales.info, a website that specalizes in providing LCD projector rating advice, tips,resources and information on how to find a LCD projector online!

    Article Source: http://EzineArticles.com/?expert=ZachParker
    http://EzineArticles.com/?Looking-For-A-Cheap-LCD-Projector-TV?&id=458372

    Monday, September 22, 2008

    Using a Digital Projector

    Using a Digital Projector
    By Luke Kent

    Many schools have one or several digital projectors available for educators to use. Many people are worried that making slideshows and setting up the equipment will take too much effort andtime. On the contrary, the use of digital projectors saves timeand can take minimal effort.

    Most digital projectors take no time to set-up. Have someone show you how to set-up the projector a few times and then try ityourself several times until you are comfortable setting up the projector on your own. Each projector and computer have theirown little quirks so having someone who is familiar with the system will prevent running into trouble in the future.

    Creating slide shows for your lessons may take a little effort inthe beginning, however, once these lessons are created they will be saved for you to reuse or to tweak. There are also websites like http://MrKent.Net that provide subject specific slide shows for you to change or use as you please.

    The only way to find out if using a digital projector is for youis to give it a try. Create or download a short lesson and present it to your students to compare it to your regular lessonFormat. One thing you will notice right away is that you spend more time interacting with your class and less time writing and erasing items on the board.

    Mr. L. Kent is an experienced educator and president of MrKent.Net - Education Technology Made Simple.

    For more educational techology tips and reviews please visit us at http://www.mrkent.net/ - Education Techology Made Simple.

    Article Source: http://EzineArticles.com/?expert=LukeKent
    http://EzineArticles.com/?Using-a-Digital-Projector&id=368723

    Sunday, September 21, 2008

    Home Theater Video Projectors

    Home Theater Video Projectors
    By Jason Gluckman

    A home theater enables us to view films in the comfortable ambience of our homes. The unique ambience of movie halls can be recreated completely, minus the crowds, and favorite movies can be watched with friends and relatives in comfort. Home theater video projectors are the main component around which the home theater system runs.

    At present, there are three kinds of video projector technology in use. They are CRT, LCD, and DLP. Apart from these, there are certain modifications also available based on the technology used for the above three.

    During the early years of video projectors, television expertise was centered on Cathode Ray Tube technology, or CRT. Cathode ray tubes are used for the generation of a television image. Three small CRTs with a single unit meant for every principal color, and a light-magnifying lens, helps in the projection of a color representation against a big screen in a dimly lit room. A CRT projector is capable of creating superior high-resolution images. This can be achieved with the help of the right combination of video processing circuitry, CRT size, and lens combination.

    The second sort of video projector is the LCD projector, or Liquid Crystal Display. This is different from a CRT projector in the sense that it is not based on the conventional projection tube. An LCD projector primarily operates by delivering a strong light source through a transparent LCD chip comprising of individual pixels, which exhibits the moving video image. This image is subsequently projected through a lens to a big screen.

    The rapid developing sort of video projector with respect to sales is the DLP, or Digital Light Processing projector. This type of projector is very similar to the LCD as in this also the real image is exhibited on a chip.

    Home Theater Projectors provides detailed information on Home Theater Video Projectors, Home Theater LCD Projectors, Home Theater Projector Packages, Home Theater Front Projectors and more. Home Theater Projectors is affiliated with Curtains For Home Theater Screens.

    Article Source: http://EzineArticles.com/?expert=JasonGluckman
    http://EzineArticles.com/?Home-Theater-Video-Projectors&id=246865

    Video Projector Rentals

    Video Projector Rentals
    By Marcus Peterson

    A video projector is a device that projects a video or computer image onto a screen. The commonly used inputs are video cassette players, CD and DVD players and PowerPoint presentations from computers. Some computers have CD as well as DVD drives which support these discs. Some projectors dont have VGA connectors, which take inputs from a computer.

    A video projector employs one of three technologies: CRT, LCD and DLP. CRT projectors are just like television, i.e. they employ cathode ray tubes. The limitations of CRT video projectors are the heavy size and the requirement of absolute darkness for clarity of the picture. LCD projectors employ a special chip so that the advantage is that the projector is very compact. Besides, it has excellent contrast and brightness. The LCD projector employs individual pixels, which produces high resolution. The limitation of a LCD is it produces a screen door effect. Also the repair of one would result in a dark spot on the screen.

    DLP technology employs a Digital Micromirror Device, instead of a chip. DLP projectors are highly suitable for viewing movies and also other multimedia presentations. The advantages of DLP projector include color accuracy and no screen door effect.

    LCD and DLP video projectors are the favorites and therefore most of the inventory of the rental companies are the above mentioned ones. The rates of these projectors start at $100 and are dependent upon factors such as the resolution and weight. The rental companies provide support throughout the whole day and night. This includes online or phone booking, shipment, installation, and operation support.

    Hotels, resorts, convention centers and conference halls enter into contract with rental companies to provide these services. The rental companies have chains of shops across a particular region or nationwide networks. The directories of these service providers can be obtained online, which directs them to the individual websites.

    Projector Rentals provides detailed information on Computer Projector Rentals: A Guide, DVD Projector Rentals, Film Projector Rentals, LCD Projector Rentals and more. Projector Rentals is affiliated with DLP Projectors.

    Article Source: http://EzineArticles.com/?expert=MarcusPeterson
    http://EzineArticles.com/?Video-Projector-Rentals&id=219993

    Thursday, September 18, 2008

    Computer Projector Rentals: A Guide

    Computer Projector Rentals: A Guide
    By Marcus Peterson

    Any meeting or conference requires a computer to handle inputs like data, graphics, video and audio. Computer as a multimedia application has properties comparable to standalone players for VCD or DVD. With the integration of IT and the Internet into the audio visual industry, computers have become an indispensable item of equipment. They are a common product line in the inventory of a/v rental companies.

    To have a meeting with computer aided presentation of data, graphics and video, one needs to have a projector that is compatible with different makes of computers such as IBM and Mac. For instance, an iMAC computer has different requirements than other systems. The accessories that come with computer projectors are audio and video cables, speakers and screen.

    The type of screen is decided by the number of members in the audience. If it is a small gathering, a 27 monitor may be used. For large gatherings, a flat screen display or a plasma monitor with 50 monitor may be used. If it is a notebook computer, the laptop must be activated to have the output to the projector. Depending on the number of the people, importance of brightness, contrast and resolution, an LCD projector would be a good fit for the occasion.

    The important factors an event manager must consider before choosing the a/v system are the room size, lighting conditions, the inputs that will be displayed, the resolution and clarity of the visual images and screen size. Depending upon the requirements, the rental rate may vary from $300 to $500. Also, the rental companies provide value added services such as complete solutions to manage the event.

    Computer projectors are used by corporate houses and universities for business presentations and seminars. They can be booked by phone or online. Most rental companies deliver the systems the previous day. The major manufacturers of computer projector systems are Hitachi, 3M, Compaq and Canon.

    Projector Rentals provides detailed information on Computer Projector Rentals: A Guide, DVD Projector Rentals, Film Projector Rentals, LCD Projector Rentals and more. Projector Rentals is affiliated with DLP Projectors.

    Article Source: http://EzineArticles.com/?expert=MarcusPeterson
    http://EzineArticles.com/?Computer-Projector-Rentals:-A-Guide&id=220327

    Ceiling Mount a Home Theater Front Projector Metalcraft Mounting System

    Ceiling Mount a Home Theater Front Projector - Metalcraft Mounting System
    By Kyle Kolbe

    After I fainted from sticker shock at the pricing of the official Sanyo PLV-Z3 projector ceiling mount ($200), I found a much cheaper solution. For $36.95 I could buy a Metalcraft all metal adjustable ceiling mount off ebay.

    Mounting a projector to my ceiling was easier than I thought. Heres how I did it.

    Tools youll need:

    * Philips Hand Screw Driver

    * Circular Level

    * EZ Anchor Stud Solvers

    * Tape Measure

    * Step Ladder

    Size up the mounting hardware: The Metalcraft mounts ceiling plate is large measuring five by five inches square with six pre-drilled holes for ceiling screws. A post descends to the projector mount plate.

    How I measured my room for optimum mount placement: Bisecting the width of the room, considering the airduct, and measuring eleven and a half feet from the front projector screens surface plus the half the length of the mounting plate, I placed the plate on the ceiling and marked each screw hole.

    Anchored to ceiling: Wear safety goggles to avoid getting ceiling board dust in your eyes. I removed the plate and drove the metal EZ Anchor Stud Solver anchors until they were flush with the ceiling. The EZ Anchors are great because you never have to drill a pilot hole for the self-tapping anchors. I replaced the plate over the anchors and drove each #8 screw into its anchor. You may need an extra hand to hold the plate in place while you tighten the first two to four screws.

    Attach the projector plate before attaching to ceiling plate: Since the mount assembly breaks into two parts, one attaching to the ceiling with a post that screws into the adjustment plate for the projector, you can screw and tighten the hex screws and plastic bushings to the projector body.

    Secure the projector plate to the ceiling mount: The Metalcraft ceiling mounts post accepts a adjustable knob screw. You will need someone to help you get the screw started while they lift up the projector. With the screw tight you can rotate the projector from left to right on the ceiling post.

    Fine-tuning: The Metalcraft mount allows yaw, pitch and rotation. With the hand tightening of knobs on the projector mount plate you can canter your projector perfectly on your projection screen. With the aid of a circular bubble level you can level the projector from front to back and left to right using the corresponding thumb knobs. With projector level you can then adjust your lense up and down and to the side for a perfect screen fill with no keystone distortion correction.

    Caveat: The Metalcraft mount is wobbly because of the thinness of the metal used on the metal band that holds the projector mount to the ceiling mount post. When you need to change interconnects or adjust manual focus and zoom the projector rocks slightly as the metal gives. This does not cause the projector to fall out of register, though. Hey$36.95what do you expect?

    The Metalcraft Mounting System for the Sanyo PLV-Z3 LCD projector (and many other projector brands and models) is a great bargain and very reliable. Highly recommended.

    Father, Husband and Geek. My geeky interests have not changed since I was a kid. I still love comic books, anime, role-playing games, console video games, indie rock, imported toys and mecha models, bad American and great British sitcoms, and all the tech that lets me experience these hobbies to their fullest. Now that Im married with children, Ive had to strike a balance between supporting and pleasing my family and feeding my geekery hunger. Lucky for me, my wife is very accomodating and even geeks out with me on occasion (the ladies love Joss Whedons Firefly). My two year old likes anything that moves on the front projection screen and makes noise, so far she is easy to please. Geekwithfamily.com exists to enrich the lives of fellow geeks and the friends and family who put up with them.

    Article Source: http://EzineArticles.com/?expert=KyleKolbe
    http://EzineArticles.com/?Ceiling-Mount-a-Home-Theater-Front-Projector---Metalcraft-Mounting-System&id=207007

    How To Choose A Projector

    How To Choose A Projector
    By Jakob Culver

    Good presentations make the foundation of the successful business deals. So while making presentations make sure that you have an easy access to a good projector which suits your requirement as this is going to at as a catalyst for a business deal to happen! The picking of projectors is mainly dependent on the type of work or the kind of business that you have. As for an advertising firm presentations are very frequent so they make doubly sure that they procure a good projector!

    The other factor that determines the selection of a projector is the dimension of the room or the conference hall where the presentation is scheduled. As the clarity and readability of the data projected varies from the projector which is designed to function in small room as compared to large room , so presentations for larger areas and for a great number of people should be made through more sophisticated projectors.

    Portability of the projector is the another issue, if you usually travel from one place to another for their business presentations then make sure that you invest in a good quality portable projector that is easily transported and provides an easy set up. It is mandatory that it can be set up instantly as who would be carrying a throng of technical people when doing mobile presentations. A projector that easily connects with a personal or portable computer will be ideal to make your presentations simple but sophisticated.

    Norms suggest that a portable projector with a minimum brightness capacity of at least 800 lumens is fine to handle the presentations. In contrast to this larger projectors must have a brightness capacity of at least two thousand lumens to make the presentation clear even to those who are seated at the back of the room. A projector must have at least a minimum of 1500 lumens to be able to project effectively in a room where plenty of light comes in as when there are no blinds or curtains

    Once you have decided on the type of the projector that you will be using, then make sure that you use projectors in a dark room but if it cannot be avoided, always position the projector at an area where there is less light. It is also important to take note of the resolution of your projector as this signifies the amount of pixels it can display. . Projectors can be easily installed but it is best to consult technical people for setting up the projector especially if they will be mounted to the ceiling. Make sure your projector's efficiency will last long by using alcohol or a special cleaning solution for the projector lens.

    So go ahead and make a appropriate selection from a wide variety of projectors that are available in the market and just to tell you that vendor will be one happy person to give a trial presentation, so make sure that you dont miss on that as it will throw more light on the projector features.

    Jakob Culver is founder of the website http://thecomputersnet.com and has a solid background in computers and electronics.To find out more information about this topic or AV equipment visit:http://thecomputersnet.com

    Article Source: http://EzineArticles.com/?expert=JakobCulver
    http://EzineArticles.com/?How-To-Choose-A-Projector&id=269445

    Tuesday, September 16, 2008

    Buyers Guide to Home Theater Projectors

    Buyers Guide to Home Theater Projectors
    By Warren Thompson

    Over the years, I have grown really attached to my home theater system. I must say, of all the rooms in the house, my own little movie theater is the one I could not live without. I am absolutely in love with my home theater system and, if you are anything like me, I am sure you will love yours too. I found, when I was initially building my system, that there was so much information to absorb. Every product out there seemed better than the next, and I found myself unsure about which to buy. Here are a few things to keep in mind when shopping for a new home theater projector.

    There are two main types of projectors on the market; DLP and LCD. DLP stands for digital light processing. It was invented by Texas Instruments, and utilizes a microscopic array of over 2 million mirrors. DLP has a higher contrast than LCD, but there are some unfavorable consumer reports that note something called the ainbow effect. The ainbow effect is noticeable when looking from one side of the screen to the other, and is characterized by a sudden burst of color.

    LCD stands for liquid crystal display. These projectors have three distinct glass LCD panels inside; one for each component of the video signal (red, green, and blue). While DLP chips reflect light, the LCD panels allow light to pass through them. LCD projectors produce brighter images, and they are known for having excellent color saturation. In the end, you will be hard-pressed to notice a great difference between the two types of projection systems.

    When shopping for a new projector, keep your particular needs in the forefront of your thoughts. As I mentioned above, it is really easy to lose yourself in the minutiae of each particular system. Connectivity is a definitely something to be mindful of. Make sure that you are able to connect all of your components, including your gaming system. Nothing beats playing Halo in real-life size! Contract ratio is another important factor; the higher the ratio, the better the picture will be.

    The brightness of your projector is another thing to consider. Light output is measured in ANSI (American National Standards Institute) lumens. You will want to avoid a projector that produces anything shy of 1000 lumens. As you are likely aware, the projection resolution is extremely important. This refers to the number of pixels that can be displayed on the screen. Go for something that is no less than 1024x768, as this will allow you to fully appreciate the depth and quality of HDTV. In the end, you should buy the projector that is in line with your needs and your budget. Soprano's is coming on right now! Time to go!

    Warren Thompson is like a kid in a candy store, when it comes to home theater products. When he can drag himself away from his miniature movie theater, he writes for hometheaterfocus.com an excellent resource for information about soundproofing, digital video recorders, wiring diagrams and more.

    Article Source: http://EzineArticles.com/?expert=WarrenThompson
    http://EzineArticles.com/?Buyers-Guide-to-Home-Theater-Projectors&id=188234

    Monday, September 15, 2008

    How to Fix a Broken Slide Projector

    How to Fix a Broken Slide Projector
    By Jeffrey Saunders

    A slide projector is a great way to store, share and show photos, presentations and other information. But what do you do when your slide projector is having problems. How to fix it can be a simple matter of jiggling a few wires, cords or cables, or taking the entire projector apart and taking a peek as to whats inside.

    The most common problem with a slide projector that needs fixing is a simple projector jam. A projector jam is when one of the slides is stuck in a position that wont allow the carousel to rotate. Now, this may seem like a minor inconvenience, but it should also be the first area you look into when your projector is having problems. How to fix it, and remove the jammed slide can be done in a matter of steps.

    1. Shut the slide projector off and let it cool down for a few minutes.

    2. Remove the slide tray by loosening a latch or placing a coin in the middle of the tray & turning it

    3. Turn the tray upside down

    4. Locate the jammed slide and carefully remove it

    5. Place the tray back into the projector

    6. If the slide isnt damaged, insert it back into the carousel

    The next time you notice your slide projector is having problems, how to fix it is to follow the steps listed above. Normally, when a slide projector wont fully rotate, its because of a jammed or lodged slide within the carousel. Carefully removing the trapped slide should solve any projector problems youre experiencing.

    If youve followed the steps noted above, and you find that still your slide projector is having problems, an experienced technician may tell you how to fix it, and guide you through various stages of repair. The larger the slide projector you have, the more chances it has to jam. So before you take your projector apart or visit a potentially expensive repairman, be absolutely certain that it isnt a jammed slide thats causing your projector problems.

    If your digital image projector is having problems, how to fix it can be a matter of replacing a burnt out bulb, ensuring that all your cables are properly connected to rebooting the entire system itself, depending on the sophistication level of your projector. Always go through the instruction manual when your digital projector is acting up.

    Sometimes when your projector is having problems, how to fix it can be as easy as remounting it or reinstalling it. An improperly mounted projector can sometimes not project any image at all, and may appear to be broken and in need of fixing. Check to see if your projector is mounted and affixed straight. If it isnt, take it down and remount it, being careful to make certain that its properly mounted. That should solve any issues regarding your projectors refusal to show images. If that does not work, then you may consider taking your digital projector back to its point of purchase for a qualified inspection.

    Jeffrey Saunders loves do-it-yourself technology

    He also likes great deals on refurbished electronics. Amazing prices on big brand names like the Apple iPod Nano

    And more fantastic deals on great items like digital camcorders.

    Article Source: http://EzineArticles.com/?expert=JeffreySaunders
    http://EzineArticles.com/?How-to-Fix-a-Broken-Slide-Projector&id=523766

    Sunday, September 14, 2008

    Compare LCD Projectors

    Compare LCD Projectors
    By Ken Marlborough

    LCD (Liquid Crystal Display) projectors are devices used for displaying presentations or videos in an enlarged size. They are the modern replacements for slide projectors and overhead projects which were popular earlier.

    LCD projectors are available in several variants with differing specifications. Choosing the right projector is as simple as knowing what it will be used for. The two parameters needed to compare an LCD projector are - cost and specifications. Knowing what is needed and how much you will need to use the various features / specifications of an LCD projector are going to be will help one compare the projectors with a better perspective. For this reason, it is important to know the basics of projectors before comparing them.

    Aspect Ratio: It refers to the width vs. the height of the projected image. UXGA, VGA, XGA, and SVGA resolution all have a 4:3 aspect ratio.

    Brightness: A projector's brightness is measured in lumens. The more light in the room where the projector will be used, the more bright the projector should be.

    Contrast Ratio: Is the ratio between the darkest and brightest areas of the projected image. Medium Contrast ratio projectors can be found with a ratio of 500:1 to 1200:1.

    Data Signal Ports: These ports on the projector should be compatible with whatever image source they will be paired with.

    Keystone Correction: This is the ability to correct the image distortion that is created when a projector is placed at anything other than a 90 degree angle to the screen.

    Native resolution: This resolution for a digital projector is the actual number of physical pixels on the projector's image chip.

    Projection screens: These screens come in various fabrics and sizes. While it's possible to project the images on a blank wall, the best image quality will be achieved by projecting the images on a good screen.

    Video Format Capability: A digital projector's video format capability determines which video format data it can accept. Most projectors will offer all three: PAL, NTSC, and SECAM.

    A wide range of desired projectors can be found by giving exact specifications on various website over the internet. Once these basic features of projectors are compared and the best suited LCD projector identified, one can go ahead and compare the prices of the required projector.

    LCD Projectors provides detailed information on LCD Projectors, LCD Projector Rentals, LCD Projector Lamps, LCD Video Projectors and more. LCD Projectors is affiliated with Cheap LCD TVs.

    Article Source: http://EzineArticles.com/?expert=KenMarlborough
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    Digital Projector Give a Bigger Picture

    Digital Projector -- Give a Bigger Picture
    By NamSing Then

    Digital projectors are those video projectors which are used in conferences for presentations. The digital projectors receive video signals from, usually, desktop computers and display images on large screens which can be easily comprehended by all in the gathering.

    Two Types of Digital ProjectorsTo begin with, there are two technologies used by digital projectors, the older one being the LCD, liquid crystal display with independent transparent panels of LCD for each constituent primary color (red, blue and green.) The image transmission depends on the signal received by the projector from PC which redirects the light signals through these LCD panels and lens onto a screen. The LCD projectors look pretty similar to older slide projectors and are simple in construction and thus cost less in comparison to their successors DLP projectors. The LCD can be thought of as slides placed at the focal length of the lens making it complete. Clarity of picture in LCD projectors depends on the number of pixels it is set for. (Pixels are smallest area of data or picture holders)

    DLP Projectors: The Latest of the Digital ProjectorsDigital Light Processing or DLP is a technology developed by Texas Instruments in 1987. DLP projectors bring in a paradigm difference in technology in image projection to board rooms. Unlike their predecessors, DLP projectors make use of tiny mirrors or micro mirrors to reflect light images to pass through the projector lens and onto a screen. Each mirror can be thought of as representing a pixel. The mirrors reflect primary colors in rapidly rotating succession as actuated by a rotating color filter wheel. The image of rapidly changing colors constructs images for human eye perception. The micro mirrors are collectively called as DMD or digital micromirror device.

    For the sake of enhancing picture clarity, the rotating wheel is provided with a plain patch which allows plain white light. This type of DMD projectors are also known as single chip projectors. The three chip projectors are a bit complicated but offer better clarity. Here a prism splits the light from lamp into primary colors which are redirected to DMD which recombines them before projecting through the lens.

    Where Is the DifferenceDLP projectors are lighter and give far better pictures. Single chip resolves 16.7 colors while the three chip model does a, hold your breath, 35 trillion colors.

    Commercial ModelsTexas Instruments is the pioneer who owns the patent for DLP technology. Fraunhofer Institute of Dresden of Germany developed the same technology simultaneously and markets it as Spatial Light Modulators. HP, Samsung are other market leaders in both LCD and DLP technologies.

    NamSing Then is a regular article contributor on many topics. Be sure to visit his other websites Digital Video Camera, Lcd Tv Monitor and One Stop Information

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    Build Your Own LCD Video Projector

    Build Your Own LCD Video Projector
    By Andrew Seltz

    Mix big screen home theater dreams with a skimpy budget and you have the makings of a fantastic do-it-yourself project. Just think of how impressed all your friends will be watching blockbuster movies on a video projector you made with your own 2 hands.

    It was just these motivations that landed me in front of my web browser digging for information for this project. There are a lot of cheesy websites that promise the moon and sell you a plastic magnifying lense and the instructions to stick a television into a box and put this lens on the front. You will get an image, but it will look like you made it yourself. - dark, and blurry.

    Is there any way to make this work? The short answer is yes. A video projector is essentially a high resolution LCD video screen with a really bright light shining through it and a projector lense enlarging onto the screen. New portable models use very tiny, and expensive, LCDs along with sophisticated light sources and high quality lenses. If you are willing to end up with a projector that isn't quite so tiny, you can scavenge the parts you need from an LCD computer monitor and add some electronic components and relatively inexpensive lenses. For $200-$500 you should be able to create a high resolution bright projector that will really impress your friends.

    The parts you need are:

    • High resolution LCD computer monitor
    • Projector lens (and possibly 2 fresnel lenses depending on the plans you use)
    • Cooling fan(s) - bright lights get hot when you shove them in a box
    • Bright lightsource (one approach to the project is to use an old overhead projector)
    • Electrical power supply

    There are dozens of websites with step-by-step plans for free or for sale. Some sell parts that you'll need. Two that I've found to be excellent are LumenLab and the DIY Projector Company. They both sell parts and parts kits. LumenLab sells a very nicely produced PDF instruction guide with detailed plans. DIY offers plans free, but expects that you'll buy one of their kits to actually make the projector. They both use the LCD in a box with a lamp approach.

    InventGeek has a great article explaining the whole process in depth including the theory behind projectors. I recommend you check it out. The DenGuru website shows another approach to the project. They use an old overhead projector for both the lightsource and lens. You strip the LCD panel out of its frame and lay it on the projector like a transparency. Ugly, but it works! Check out their tutorial.

    Break out your toolkit and get busy - and let's be safe out there people!

    Andrew Seltz is a Go-To Guy! His wide range of interests and experiences have made him a walking search engine for his friends and colleagues. His passion for film and video production have made him particularly interested in Big Screen Televisions and Home Theaters. Visit his site: http://www.ColossalTV.com

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    Friday, September 12, 2008

    Video Projector Guide

    Video Projector Guide
    By Riad Haddad

    Well; the world of Projection is certainly a vast place to wonder uninformed, so get informed. I will try to keep this guide as simple as possible.

    Things to look for when buying a projector:Manufacturer/MakeThere are many projector manufacturers these days that make it seem impossible to choose from. But to make it simpler, many manufacturers now a days use parts that are supplied from other manufacturer. In other word not all the parts in a projector is manufactured by the same manufacturer. Thus many projectors already have similar components incorporated into them. Always read reviews posted on computer magazines and online computer magazines before purchasing high end/high priced projector. Look for a company that offers the best warranty & support. Brands like Sony, Panasonic, Toshiba, Sharp, In-focus, View sonic, Mitsubishi, Epson are amongst the best there is.

    TechnologyThere are many technologies available today. But the main two types are LCD & DLP. In simple DLP which stands for Digital Light Processing uses hair width tiny mirrors to reflect light into a screen. DLP offer better overall image but cost a lot more. So for home users its better to opt for LCD based projector because of there much lower price and higher availability. Also LCD projector offer excellent image that is comparable to DLP. Big companies and presentation oriented businesses well find DLP a better choice. There are also projections panels. Projections panels are a form of transparent display that are placed over an ordinary Overhead projector and used to project the same type of video sources that normal projector use. Projection panels are cheaper than the types described earlier.CRT Projectors are an old projection technology that is no longer used these days.

    ResolutionResolution is very important aspect to consider when purchasing a projector. Many older models are VGA (640*480) & SVGA (800*600); these models are good for displaying movies and other low resolution images, but will no be sufficient for projecting high quality images demanded by high end application such as 3d modeling, games, simulators and CAD. Check the simple chart below:

    640*480 (VGA) resolutions are good for Video Games, VHS, VCD and Standalone DVD users. This panel is perfect for DIYers wanting to keep costs at lowest.800*600 (SVGA) resolutions are perfect for Computer based DVD playback and normal Windows and operation system work. (Plus all the above)1024*768 (XGA) resolution is perfect for high resolution Computer Games and design applications such as AutoCAD (plus all the above)1280*1024 (SXGA) resolution is perfect for HDTV applications and computer software that require high detail (plus all the above)

    Color DepthColor depth states how good the LCD represents color. Its the number of colors a monitor or an LCD panel is able to show. A good color depth is 16-Bit; although 24-Bit is strongly advised, this is the color depth that most high end projection panels have.

    Lamps An important thing to investigate is the type of lamp used. Check the replacement price of lamps and life expectancy. It would make you no good if you purchase a low price projector and later find out that every lamp replacement will cost you 400$. New lamp models can work for a minimum of 10,000 hrs.

    BrightnessBrightness output is expressed in lumens. The higher the lumens the better the image is displayed in less than perfect lighting conditions. Some new projector models can display a vivid image even with the light on. 2000 lumens is a good choice for home use. Choose 3000-4000 for presentation theaters and jobs that require a bright image in a not too darkened room. Lumens rating of below 2000 such as the low priced 1300 models will have to be operated in a completely darkened room (Pitch Black).

    ConnectionsConnections are a very important factor when choosing a projector. Composite, S-Video and RGB is almost standard on most models. You will need RGB for hooking your computer or laptop; Composite & S-Video for connecting DVD players and VCRs. Some newer models have DVI inputs too that enable them to be connected to high quality video systems like a video editor or digital video cameras. A remote control is a must; you don't wan to get out of your comfy chair every five minutes. Some applications require two RGB connections for simultaneous viewing of different video sources, so make sure to check for it if you need it.

    Long throw/Short throw projectionIts important to decide where you are going to place the projector. If the projector is going to be placed in front of an audience then you will need a short throw projector. And if you need to fix the projector some where behind the audience (Far from screen) you will need a long throw projector. What happens when you use short throw projector for a behind the audience application is that the image will be too large to fit on screen, and if you use a long throw projector for short distances you will get a very small and unclear image.

    DIY ProjectorsWell this is interesting. Did you know that you can build a projector yourself, its not that hard really and it will cost you a fraction of retail prices? You should have basic knowledge with DIY projects. The image quality is very good you won't believe it. Though some patience is required in order to complete the projector.

    -------------------------------------------------------------------------------------------------------

    ** You are free to publish this article by any delivery method you see fit. But you are kindly asked keep the article intact and as is.

    Riad Haddad is a Software Developer and Internet Marketer specializing in state of the art custom solutions; from database development to website marketing.

    www.fitsoftinc.com

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    Auditorium LCD Projectors

    Auditorium LCD Projectors
    By Ken Marlborough

    Auditorium LCD Projectors are generally up to 40kg in weight, with 3,000 lumens (a measure of brightness) and above, have SVGA (brightness range from 1700 - 2000 lumens) or XGA (brightness range from 2000 - 3000 lumens, are more expensive than SVGA) native resolution. Auditorium projectors are mostly LCD projectors and usually come with a ceiling or rear mount facility. They usually have motorized zoom lens, are generally operated via remote control and offer multiple input and output ports for both PC and video. Auditorium LCD Projectors generally require external speakers and are targeted at spacious venues like theaters, auditoriums and convention halls.

    In other words, auditorium LCD projectors are heavy duty, and super bright, allowing them to provide the added illumination for very large applications. These projectors deliver high brightness that can be used in a wide range of places. They generally come with a lens shift function and a wide range of optional, interchangeable lenses also contributes to installation ease. These LCD Projectors have a variety of functions for high picture quality and network compatibility is also included. Providing realistic colors, sharp contrast, and super bright images, they enable presentations with persuasive impact in a variety of situations.

    Some factors which help in choosing a better Auditorium LCD Projector are: Lumens, Resolution, Lens Power, Keystone Correction, Scanning Frequency, Contrast, Lens Throw Ratio, Aspect Ratio, Image Offset Range, Computer Compatibility, Video Compatibility, Image and Mouse control, Projection Modes, Color Reproduction and Lamp Life.

    These projectors generally have a specially designed auto focus lens, which allows for quick and easy switching between multiple screens with minimal user adjustments. Their automatic color correction feature provides true color reproduction even when projecting onto colored or textured walls for a perfect presentation anywhere. Some of them have a 3-D Reform technology, which lets one set up the projector virtually anywhere in the room and still get an aligned image.

    While choosing the right LCD projector for an auditorium, the dimensions of the auditorium, the ambient light conditions and the distance where the projector will be placed from the screen should considered and projectors whose specifications exceed the requirements should be considered.

    LCD Projectors provides detailed information on LCD Projectors, LCD Projector Rentals, LCD Projector Lamps, LCD Video Projectors and more. LCD Projectors is affiliated with Cheap LCD TVs.

    Article Source: http://EzineArticles.com/?expert=KenMarlborough
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    Thursday, September 11, 2008

    How DLP Projectors Work?

    How DLP Projectors Work?
    By Paul Cris

    DLP (Digital Light Processing) projectors can be attached with computers, DVD players, VCR players, HDTVs and video games. It comes in various models and with enhanced features. DLP Projectors are also called as Multimedia projectors.

    In mid 1990s Texas Instruments developed Digital Light Processing. DLP technology is based on DMD or Digital Micromirror Device. It is a switch, which controls the intensity, and placement of projected light via 4,80,000 mirrors. In a DLP-based display there are unlimited colors. You can control the saturation and clarity to make bright video as clear as you want. The DMD is coordinated with a graphic signal, a light source and a projection lens.

    The micromirrors of DLP are fixed on a panel of small pivots, which enable them to slant either way. If it slants towards (on) light source it creates bright pixels on the screen and when it slants the other way (off) it creates darker pixels. When the bit-stream image code enters the semiconductor, the semi conductor directs the switch to on or off. If the switch remains on more times than off, it reflects a light gray pixel. Otherwise it reflects darker gray pixel.

    In DLP systems white light is passed through a color wheel and it runs to the surface of the DMD panel. The color wheel converts the white light into red, green and blue. From these three colors a DMD chip can create 16.7 million colors. So a 3-DMD chip DLP system can create a mammoth 35 trillion colors. Then our eyes understand these colors and see an image.

    Paul has been providing answers to lots of queries through his website on a wide variety of subjects ranging from satellite phones to acne. To learn more visit http://www.askaquery.com.

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    Wednesday, September 10, 2008

    An Introduction To LCD Projector Rentals

    An Introduction To LCD Projector Rentals
    By Marcus Peterson

    LCD is a technology that is used to present a digital image for viewing, for instance, on a laptop or via a projector. LCD is the acronym for Liquid Crystal Display. Most projectors use LCD technology. They can easily incorporate text, graphics and video. These types of projectors are also known as PowerPoint projectors since they are mostly used for presenting PowerPoint slides by corporate houses and business houses for business and sales presentations.

    LCD projectors are versatile, reliable and portable. They can be easily connected to video, PC and laptops; they are compatible to most systems. They can project images on any surface with equal brightness. They can present data, graphics and video. These projectors weigh less; they are easily transportable. They have long-life bulbs. They have built-in speakers.

    LCD projectors are characterized by resolution, luminescence, dimension, weight and contrast. Resolution is defined as the number of horizontal picture dots times the number of vertical picture dots. Most projectors are usually XGA or SXGA i.e. 1024 X 768 pixels or 1280 X 1024 pixels. LCD projectors have a brightness or Lumens of 1000-5000 lumens. They vary in size from small to bigger sizes and they weigh two pounds to 100 pounds. The contrast ratio determines the handling of the subtler colors.

    The major suppliers of LCD projectors are Toshiba, Sanyo, Hitachi, Canon and Plus. These manufacturers cater to all the segments with prices ranging from $1,000 to $15,000.

    The rates of LCD projectors depend upon the type of projector and usually the daily rates vary from $100 to $300. The rates for multiple days are given with discounts.

    LCD projectors are mostly used for conferences, staging events and business presentations. Their high resolution, ability to handle colors, and quick start up make them a powerful piece of multimedia equipment to convey the message across a large audience.

    Projector Rentals provides detailed information on Computer Projector Rentals: A Guide, DVD Projector Rentals, Film Projector Rentals, LCD Projector Rentals and more. Projector Rentals is affiliated with DLP Projectors.

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    http://EzineArticles.com/?An-Introduction-To-LCD-Projector-Rentals&id=227486

    Computer Projector Rentals in Florida

    Computer Projector Rentals in Florida
    By Eric Morris

    Computer projector rentals in Florida provide all kinds of computer projectors for short and long term rental in the state. Florida is one of the prominent hubs for all major activities, business centers and educational institutions. Today, there are many rental companies in the state, specializing in computer projector rentals.

    Computer projector rental is the most apt and economical way to possess expensive computer projectors for limited time duration. Today, the computer projector has become an indispensable part of digital presentation in almost all schools, colleges and companies. The enhanced qualities of computer projectors have imparted tremendous changes in the method and quality of presentations. These qualities have led to the popularity of computer projectors among people in all sections of society.

    RUSH Computer Rentals Inc., Fort Lauderdale Computer Rental Service, and Saint Lucie Co. Civic Center are some of the major companies in the field of computer projector rentals in Florida. Most of the rental companies in Florida handle both corporate and personal orders. There are also online computer projector rental companies that provide services to people in and around Florida.

    Depending on the need, one can avail computer projectors for rental in Florida on daily, weekly, monthly and yearly rentals. All types of computer projectors, ranging from mobile computer projectors to meeting room computer projectors, can be availed for rent. Almost all top brands of computer projectors including Infocus, Proxima, Mitsubishi and Toshiba are available in the state for rental. The rental rates are determined by the model and the duration of the rent. It will fluctuate from company to company and from city to city.

    However, getting computer projectors for rental is a complex task, as most projectors are designed for different operating systems and even processors. Thus, it is always advisable to determine the type of the computer projector you need before renting it.

    Computer Rentals provides detailed information on computer rentals, laptop computer rentals, computer projector rentals, desktop computer rentals and more. Computer Rentals is affiliated with Laptop Computer Sales.

    Article Source: http://EzineArticles.com/?expert=EricMorris
    http://EzineArticles.com/?Computer-Projector-Rentals-in-Florida&id=353016

    Tuesday, September 9, 2008

    DVD Projector Rentals

    DVD Projector Rentals
    By Marcus Peterson

    DVD is a type of optical storage technology. Digital form of storage has completely replaced magnetic storage media like floppy disks. DVD is the acronym of Digital Versatile Disk and is better than CD in terms of audio and video quality. It is versatile and can be played in DVD players and computers.

    DVD comes in various formats like DVD-R and DVD-RW, the R and W means read and write capacity of the disc. DVD players can play units can play a various units audio and video discs in different formats such as CD-R, CD-RW, mp3 and VCD. DVD players also support jpeg formats. Some DVD players have recording features.

    DVD projectors are used to project audio and video images from DVD players and VCR. Care should be taken to ensure that the medium used is compatible with the DVD projectors. For instance, some DVD projectors dont support inputs from computers. While hiring DVD projectors, the accessories are DVD players, DVDs, sound systems and screens. These have to be carefully chosen. They also come with IR remote controls and laser pointers. The output can be fed into high resolution plasma and LCD displays.

    Some of the branded names available for rental come from 3M, Canon, BenQ and InFocus. They are available in different models with different features. DVD projectors can be hired for as low as $80 and the accessories are charged with their own rental rates. The rental companies require credit card information and an ID. Since DVD projection is of high quality, the major segment is the corporate and business houses for their presentation requirements.

    DVD projectors, because of their versatility and high quality, are used in wedding receptions and other staging events such as conferences and trade shows. DVD projectors have made the film projectors less attractive.

    Projector Rentals provides detailed information on Computer Projector Rentals: A Guide, DVD Projector Rentals, Film Projector Rentals, LCD Projector Rentals and more. Projector Rentals is affiliated with DLP Projectors.

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