Projector Hire - DLP Vs. LCD

When you’re hiring a data projector for your presentation you will often come across a decision to be made – that is DLP or LCD projector. The differences are in many cases extremely technical, and the layman may end up more confused than ever! We have put together a very brief summary of what you need to know when hiring a projector.

DLP or Digital Light Processor is a new technology which allows a much smaller projector to be made. So if portability is important, for example if you are going on a plane with the projector, then it may pay to look at DLP. The DLP chips themselves are made by US company Texas Instruments, and they have been aggressively marketing the concept for some years. This gives them a perceived advantage over the LCD manufacturers who are all competing against each other.

The new breed of LCD (Liquid Crystal Display) projectors is however fighting back on the size front with the introduction of a new smaller panel, allowing manufacturers to create higher resolution portable projectors.

Both camps claim issues occur with the opposition:

DLP sometimes suffers from the 'rainbow effect' where the picture appears as a rainbow briefly noticeable when changing focus from one part of the screen to another. It appears as a secondary image that appears at the viewer's peripheral vision and is generally noticeable when shifting focus from a high contrast area or bright object. This does not appear in “3 chip” DLP projectors, but these tend to be very high end projectors in terms of price.

LCD sometimes suffers from what is called “screen door” effect, meaning the picture is pixilated and appears as if you're watching TV through a screen door. Again the newer LCD projectors have improved the aperture ratio to address this and it is much less of an issue than before. Similarly DLP projectors used to claim a much higher contrast ratio – i.e. blacks were much blacker than LCD; but some of the latest LCD models achieve a 6000:1 ratio, matching the best DLP ones.

Both types are going through constant changes and improvements, to the point where one cannot be said to have an overwhelming advantage over the other. So, unless you have a very specialized need for your presentation, go with the projector model that fits in terms of weight, size, brightness and price.

James Hunter works for Status AV, a leading provider of projector hire in the UK.

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/

LCD Video Projectors

Below are some of the best and most widely-used LCD Video Projectors below $2,000 (except for the Panasonic product, which is a little above $2,000) available on the market.

Epson PowerLite 81p LCD Video Projector –XGA features a 5-watt audio system; high-aperture LCD with 2,000 ANSI lumens with 1,024 x 768 XGA resolution to deliver accurate color, color saturation, and image quality; four input connections; and automatic source selection, setup and operation. It also supports USB connectivity; NTSC, PAL, SECAM, and HDTV signals.

Hitachi CPX275 Video to XGA LCD Projector can project various computer signals as well as NTSC/PAL/SECAM video signals and is specifically designed for mobile professionals and budget-conscious consumers. It features 1200 ANSI lumens with 1,024 x 768 XGA max resolution, UHB lamp, and magnifying for closer viewing.

NEC VT670 Value LCD Video Projector enables you to use a variety of inputs, including video and HDTV. The projector is designed with NEC VT’s Vortex and Image Processing Technology. It also features 2,100 ANSI lumens of brightness, 1,024 x 768 resolution, and Simple color-coded connections for all sources.

Panasonic PT-LB10U Video Projector is a super-slim projector from Panasonic’s family of ultra-compact XGA micro-portable LCD projectors, offering an XGA resolution of 1,024 x 768, 2000 ANSI lumens brightness and Digital Keystone Correction. It can display 480p, 480i and 625i component video and S-Video signals in either 4:3 or 16:9 widescreen aspect ratios.

Sony VPL-CX1 Superlite LCD Video Projector is the smallest and lightest projector from Sony, featuring a mechanical cooling structure; internal scan converter to display 1024 x 768 resolutions such as VGA, XGA, and SXGA (in addition to its native SVGA resolution); USB hub port for enhanced digital connectivity; and 550 ANSI lumens brightness.

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.

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.

An Introduction To LCD Projectors

A projector is an apparatus for presenting an enlarged image on a screen from a transparency such as a photographic slide or a film. In a motion picture projector, each frame is held stationary at an illuminated aperture for a brief period, and then advanced by an intermittent sprocket or reciprocating claw, the light being cut off by a rotating shutter during the movement. The sound track on the film is reproduced at a separate sound head where the film is moved continuously at a constant speed.

LCD projectors come with the capacity to deliver high-definition pictures with high pixel density. Most of the LCD projectors are compact and lightweight; most of the advanced LCD projectors even use two-inch poly silicon panels. These panels (an advanced LCD projector might have TFT panels) help to produce high-quality images with a high-definition quality of about 1,000 scanning lines.

Most of the ordinary and average LCD screens have a screen ratio of 4:3. However, in some cases, an LCD might also have a screen ratio of 16:9. Images are projected on to a super-large screen. Some of the salient features of a compact, lightweight LCD projector are:

1. The utilization of three high-definition two-inch poly silicon TFT LCD

panels are key elements in the production of the three RGB basic colors.

2. Images of high ratio contrast are produced. Usually the image contrast is 400:1.

3. A good LCD projector adds to the normal brightness by about 40% over most other conventional and ordinary LCD video projectors. These LCD projectors use a high-transparency LCD panel for the above purpose.

For example, one of the recent high-quality LCD projectors is the Fujitsu LPF-D711 high-definition LCD projector for home theater.

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