(In a nutshell) what's the best screen for rear projecting BIG images with CRT projectors? (Detail) Okay, this is a very specific problem. I have a Barco 1208 that i'm using for a research project using large images (~100 deg. of visual angle). This requries viewers to sit near to the screen (around 80cm) so forcing one into rear projection (otherwise the viewer gets in the way of the beam). Problem is that for some surfaces suitable for rear projection with CRT e.g. Draper Cineflex, the gain drops away very quickly as a function of viewing angle (e.g. from 2.5 to 0.5 from 0 to 50 deg viewing angle). This reduction in transmission means that the edges of large displays will be invisible. Two solutions suggest themselves. (a) A better screen surface. (b) Compensate by manipulating the luminance across the image. I'd rather the former if anyone has any ideas. I'd be willing to sacrifice some gain for lower dependence on viewing angle.