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Tuesday

Audio Visual Equipment

Whether you are in the media industry or simply need to make effective presentations either in school or at work, you need some basic know-how of different types of audiovisual equipment in order to use them to your advantage. Read on to find out what the latest audiovisual presentation tools are and to see how they can work for you.

The latest in audiovisual presentation technology is the plasma monitor, which is now common not only in advertising agencies but in boardrooms and university halls. These monitors are cleverly thin but never fail to deliver clear images and clear sound in any setting – whether it is a crowded theater or a private conference room. Many plasma monitor models feature very useful on-screen menus that let you easily adjust images. They also come with built-in speakers that can stand alone but can also be augmented with external high-fidelity units for bigger presentations. What’s more, a plasma monitor is highly compatible with any computer system – just hook it up to your laptop and flash your audiovisual presentation clearly, so that even audiences from a distance can appreciate your work.

An LCD projector is an upgrade to the old acetate projector; LCD projectors allow even rookies to share professional-looking presentations anytime, anywhere. Gone are the days of heavy, overheating LCD projectors – they now come in lightweight models that are perfect for an active lifestyle. Most of these powerful yet portable LCD projectors easily connect to any kind of computer, whether it is Windows based or a Mac. Instantly project any presentation from your hard drive or from an external storage media (such as a CD or DVD).

Digital video cameras allow you to shoot, edit, and present instant audiovisual presentations. These nifty gadgets let you easily transfer your videos onto your computer for manipulation. They also hook up easily to both LCD projectors and plasma monitors for quick presentations. It’s very easy to convert digital video into any format, making the possibilities for your audiovisual presentation virtually limitless.

Audio Visual provides detailed information on Audio Visual, Audio Visual Equipment, Audio Visual Rentals, Audio Visual Presentations and more. Audio Visual is affiliated with Alpha Numeric Pagers.

Article Source: http://EzineArticles.com/?expert=Jimmy_Sturo

Friday

Video Projectors

Some of the various indispensable parts of a video projector are the feed spool, xenon arc lamp, projection lens, optical sound head, take up spool, an aperture, normal lens and a rotating shutter. But with the advancement of science, new technologies have come into play. The projectors have become much more advanced in terms of clarity of picture and the quality of the pixels. Also, the projectors have found use in everyday households, as new versions of domestic projectors have arrived on the market. The abundance of LCD projectors, DLP projectors and video projectors has allowed the common man to enjoy the experience of a big theater hall in his living room.

Video projectors have become very common throughout the world. One can have all the excitement and enjoyment of a big movie blockbuster at home. They are also used in schools and colleges where it is necessary to show videos and films on a regular basis to a large number of people.

It is always advisable to the users of video projectors or projection televisions to pay attention to the scaler. One can use a number of processors, scalers or switches to optimize the video sources to best match the native resolution of your video projector, flat panel, or LCD/DLP-based rear projection television. Video projectors have some kind of capability for scaling. Making use of or implementing an outboard processor or a scaler can raise the performance level to a much higher level for both video display and source components.

Projectors provides detailed information on Projectors, LCD Projectors, DLP Projectors, Video Projectors and more. Projectors is affiliated with DVD Projector Rentals.

Article Source: http://EzineArticles.com/?expert=Elizabeth_Morgan

Video Projectors

Some of the various indispensable parts of a video projector are the feed spool, xenon arc lamp, projection lens, optical sound head, take up spool, an aperture, normal lens and a rotating shutter. But with the advancement of science, new technologies have come into play. The projectors have become much more advanced in terms of clarity of picture and the quality of the pixels. Also, the projectors have found use in everyday households, as new versions of domestic projectors have arrived on the market. The abundance of LCD projectors, DLP projectors and video projectors has allowed the common man to enjoy the experience of a big theater hall in his living room.

Video projectors have become very common throughout the world. One can have all the excitement and enjoyment of a big movie blockbuster at home. They are also used in schools and colleges where it is necessary to show videos and films on a regular basis to a large number of people.

It is always advisable to the users of video projectors or projection televisions to pay attention to the scaler. One can use a number of processors, scalers or switches to optimize the video sources to best match the native resolution of your video projector, flat panel, or LCD/DLP-based rear projection television. Video projectors have some kind of capability for scaling. Making use of or implementing an outboard processor or a scaler can raise the performance level to a much higher level for both video display and source components.

Projectors provides detailed information on Projectors, LCD Projectors, DLP Projectors, Video Projectors and more. Projectors is affiliated with DVD Projector Rentals.

Article Source: http://EzineArticles.com/?expert=Elizabeth_Morgan

Thursday

An Introduction To LCD Projector Rentals



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.
Article Source: http://EzineArticles.com/?expert=Marcus_Peterson

Friday

LCD vs DLPs

Two new technologies in the world of TV, DLP and LCD, are now in a stiff competition.

Some People say that there is problem of motion blur in LCD TV. It was correct before few years due to the processors in the LCD projections being slower than those in the DLP TV's. However, the sets that we are now looking at have a much faster processor in them, and therefore don't have the type of holdup or rainbow effect that the older units had. Not only that, but definitely like the picture quality is better on the LCD TV's. In fact, the LCD screen has several benefits over plasma. For instance, LCD screens run much cooler than the average plasma TV, and thus require less power to operate. Plasma TVs run so hot, in fact, that they require a fan to cool them down - which can be noisy. In addition, plasma screens have a tendency to degrade over time, slowly becoming dimmer. LCD screens, on the other hand, run relatively cool, and do not degrade over time. Some Plasma owners, who have used their TVs for a few years now, have already witnessed the dimming of their screens. Also, LCD screens tend to have overall better picture quality, and are typically 10 to 15 percent lighter than plasma

The problem with LCD TV is after given enough time, it appears that LCD panels, primarily those in the blue channel, will degrade, causing shifts in color balance and a reduction of overall contrast. The test did not include a large enough array of test units to draw any conclusions about anticipated rates of degradation under normal operating conditions

There are several unique benefits that are derived from DLP technology. One of the most obvious is small package size, a feature most relevant in the mobile presentation market. Since the DLP light engine consists of a single chip rather than three LCD panels, DLP projectors tend to be more compact. All of the current 3-pound miniprojectors on the market are DLP's. Most LCD projectors are five pounds and up.

Another DLP advantage is that it can produce higher contrast video with deeper black levels than you normally get on an LCD projector. DLP has ardent followers in the home theater world primarily due to this key advantage.

Thus due to stiff competition both LCD and DLP manufacturing companies are trying to improve the quality and are struggling for but at present DLP is having lead in it.

Keith Londrie II is a well known author. For more information on Satellite TV, please visit Satellite TV for a wealth of information. You may also want to visit keith's own web site at http://keithlondrie.com/

Article Source: http://EzineArticles.com/?expert=Keith_Londrie

Monday

The Right Projector Screen Can Save You Money!


At the LCD Projector Center we concentrate very much on LCD projectors, so why am I writing about projector screens? Quite simple really. Buying your lcd projector in isolation from the screen without considering how they work together is likely to cost you more and give you less than perfect results.

How can picking the right projector screen save you money?
One of the biggest challenges when choosing an lcd projector is getting the right brightness for the room you are going to be using it in. For home use you can usually darken the room. This means you can buy a cheap lcd projector, often saving many hundreds, if not thousands, of dollars.

But often darkening the room significantly is neither possible nor desirable. Buying a higher specification projector will give you a brighter image, but it's probably cheaper to buy a high gain projector screen. The quality lcd projector may cost you a thousand dollars more than a dimmer model, whilst quality projector screens that enhance the image brightness and clarity are only a few hundred dollars more.

Projector Brightness and Screen Gain

The brightness of an lcd projector is given in ansi lumens. Typical values for home theater and business presentation use are 500 to 3000. The higher the number, the brighter the picture will be. At the low end a darkened room is essential, whilst at the very top end acceptable results are possible with higher light levels. The current generation of home use projectors are typically in the 1000-1500 range.

The gain of a projector screen is the increase in brightness of the image produced compared to a flat matt white screen. This is given as a simple number, eg 1, 1.5, 2 etc. A gain of 1 means the image is the same brightness as on a flat matt white surface, whereas 2 means the image is twice as bright.

As an example, if you decide you need about 1500 lumen to get an acceptable quality picture, you could buy a projector with that rating and worry about the screen later. Or you could buy a cheaper 1000 lumen model and match it to a projector screen with a gain of 1.5. This would give you an effective image brightness of 1500 lumen at a reduced cost.
Very High Gain Projector Screens

Typical cheap projector screens have gains of between 1 and 1.2. Gains of 1.5 to 1.8 are achieved with high quality perlescent finishes at about double the cost. If money is no object and you need the maximum gain possible then you need a chromatically matched projector screen.
Gains of up to 4 can now be achieved with matched projectors and screens. An lcd projector only transmits 3 narrow wavelengths of light in Red, Green and Blue. A matched projector screen is covered with material that reflects only these wavelengths. Almost all of the ambient light is absorbed or scattered, so the projected image appears very much brighter.
The Downside of High Projector Screen Gain
Whilst projector screen gain might help you use a cheap lcd projector in brighter rooms than it could cope with on its own, there are 3 trade-offs. These are the viewing angle, color shifting and uneven brightness.

High gain projector screens limit the viewing angle. For a screen with a gain of 1 the picture appears high quality out to about 50 degrees from the projector. But at a gain of 1.5 that viewing angle is reduced to about 35 degrees. Over 2 and the viewing angle is down to around 25 degrees, making it much more difficult to layout your room.

Color shifting happens due to the surface properties of the higher gain screens. A true white screen will render colors accurately. By trying to manipulate the way light reflects, a high gain screen can cause a shift in some of the colors. This is rarely a reason not to buy, unless you really do need the colors to be spot on.

The biggest impact a high gain projector screen has on image quality is the change is brightness from the center of the screen to the edge. There can be up to 30% difference at gains over 2. This is usually not too much of a problem, but it does become far more noticable the higher the viewing angle.

Conclusion
A little research and a bit of leg work could help you make great savings. Treat the projector screen as an integral part of your system and buy it together with your projector. Visit stores and insist on demonstrations with a variety of lcd projector and screen combinations.

Choosing a good quality, moderate gain (1.4-1.6) projector screen can decrease the cost and increase the performance of your system. A cheap lcd projector can produce a bright, clear image at higher than expected light levels. So whilst your projector screen may cost more, overall you save.

LCDProjectorCenter.com brings together all the latest news and reviews from the world of LCD Projectors. Research your home theater or business presentation LCD Projector at http://www.LCDProjectorCenter.com
Article Source: http://EzineArticles.com/?expert=Nick_Summers

Home Theater Projectors - Keep That Lamp Burning


Increasingly, consumers who want to experience cinema-like viewing in their home opt for a home theater projector. These devices allow users to view their entertainment in a darkened room without the size restrictions of a television screen. However, as most owners will attest to, there is a somewhat significant maintenance expense associated with this type of set up; the expense of the lamp.
Lamp life in a projector is said to be between 2,500 and 4,000 hours but in some instances consumers have reported a lamp life as short as just a few hundred hours. With lamp replacements priced at a few hundred dollars, the shortened life span of a lamp can be an unwelcome surprise. Buyers should take heart however as there are numerous things they can do to help assure their new lamp burns brightly for as long as possible.
• Keep the projector stationary when possible. The filament within the lamp is fragile and is especially vulnerable to damage when it is hot; thus avoiding any jostling, especially when the unit is still hot, is important.
• Keep hands off of the lamp. Bare hands can leave oils on the surface. The oils can get burned onto the surface of the lamp which can cause cracking. Use of a tissue or soft cloth when removing/changing the lamp is wise.
• Turn the lamp off appropriately. o Turn the lamp off about 5 minutes prior to turning off the projector. This allows the fan to cool the unit.o Because turning the power on and off can stress the filament due to sudden voltage increase it is wise to avoid turning it on and off unnecessarily when taking a short break in viewing. Use of the "soft start" function can be beneficial if the projector has it.o On the other hand, an auto standby feature can be useful to assure that the lamp is not inadvertently left burning when viewing is done.
• Keep it clean and cool. Projectors should be housed to assure they are not near a heat source and have adequate venting. There should be nothing obstructing their air intake or exhaust vent. The filter should be cleaned every 3-6 months and changed per manufacturer guidelines to assure good airflow and to keep dust off of the lamp.
As with any light source, the lamp within a projector will eventually fail and need to be replaced. However, proper use and maintenance can help to assure that the projector lamp will realize its full life expectancy rather than placing any unnecessary burden on the owner's budget.
The world of home electronics is always changing, the author, Christine Peppler invites consumers to visit her website at http://www.homemedias.info for simple, useful information and shopping for home electronics.
Article Source: http://EzineArticles.com/?expert=Christine_Peppler