ABSTRACT
The display is that which will allow the audience to see the image. When speaking about projection, this will include both the projector and the display surface. It may seem obvious, but it should be stated that the projection screen is a passive element of the system. Some theatrical fabrics will have some known properties in how they handle light. Generally, these properties will often be descriptive of how much light they absorb. Gain is adversely affected by ambient light as this raises the average of the black levels; thus, a strict control of light spill on the surface is imperative. When projecting an image onto a screen, the contrast ratio will be the combination of the projector contrast, the screen contrast, and ambient light on the screen. A viewing angle is determined from the center point of the screen in either the horizontal or vertical axis.
