FORMAT

All screens are produced according to the formats of projecting devices.

The most common formats are:

(width : height : diagonal)

• Square Format (1:1: 1.41)
• Video Format (4 :3:5 )
• HDTV Format (16: 9:18.36)

Most LCD projectors use video format while some new models have HDTV format capability. It is always better to use a screen that fits exactly to the projection size. Where multiple formats are used we should choose the biggest of them all.

SCREEN SURFACE

The best suitable screen surface depends on many factors among them are, the lighting environment, projector brightness, audience sitting arrangement and method of projection (front or rear). It is not possible to generalize a rule but knowing what we want and the properties of each surface (as described in the next segment) will help us to make a better decision.

SCREEN BORDERS

Black borders are important to a screen because it enhances the perceived image but it is not always necessary. Refer to the specifications segment for more information on size of borders for each model and size of screen.

next : calculating screen size