วันศุกร์ที่ 16 มกราคม พ.ศ. 2552

Projector Screen Rentals

Projector Screen Rentals
By Marcus Peterson

Projector screens are used to project data and video. Screens can be made of material such as the conventional cloth materials like bedsheets, tarp and synthetic material. For informal occasions such as outdoor residential movies, the former are used. For formal occasions and also for movie shows for large gatherings, synthetic white material is used. Sometimes, even walls are used as projector screens.

Projector screens come in various sizes. The screen size depends upon the lens of the projector. For short throw lenses, i.e. the lens that produces the largest image in the shortest distance, big screens may be chosen. This is ideal in a small room gathering. For long throw lens, i.e. the lens that produces small image from large distances, small screens may be chosen. This is ideal for projections from a booth or stall.

Projector screens are measured by the diagonal distance of the image needed. Alternatively, screens can be chosen according to the distance of the projector from the screen. The width of the screen is half the length of the projector from the screen; i.e. if the distance is 16 feet, then the width of the screen is 8 feet.

The screens come as accessories and the rental rate start from $30. Almost all of the projector rental companies have stocks of screens.

The competition to the screen rental comes in the form of residential as hoc screens such as bed sheets and tarp. Bed sheets with a mix of colors are hung to give better picture. Outdoor projector screens are in demand during summer when one would prefer to have outdoor parties. For conferences and meetings, sometimes flat panel displays and plasma screens replace the conventional screens.

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/?Projector-Screen-Rentals&id=231077

วันอาทิตย์ที่ 11 มกราคม พ.ศ. 2552

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
http://EzineArticles.com/?Compare-LCD-Projectors&id=405807