- A "Permanently Tensioned" screen is stretched on a frame, and is designed for mounting on the wall. It is typically used in a dedicated viewing room where the screen remains in place at all times.
- A "Manual" projection screen is usually retractable, and may be ceiling or wall mounted, or it may be portable. Draper offers spring-roller and crank operated manual screens.
- A "Motorized" projection screen is retractable and operated by a motor. It may be installed to wall or ceiling, or recessed in the ceiling.
- Gain
A relative measure of a screen's reflectivity. (click here for more information)
- Contrast
The ability to accurately reproduce and differentiate light and dark characters and backgrounds, or light and dark areas of an image. Ambient light rejection properties: the ability to perform well under normal to adverse lighting conditions in the audience area.
- Resolution
The clarity of the projected image.
- Uniformity
The screen's performance when viewed from various points off the projection axis (both horizontally and vertically), and when the brightness of the center of the image is compared to the corners.
- Projection Format
The height and width of the projected image determines the screen's size and shape (AV, NTSC, HDTV, WideScreen, CinemaScope, overhead, slide or motion pictures).
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