I posted this question in another thread before I realized it wasn't relevant to the original post that started the thread.
Nevertheless, I have a rather odd situation that makes my pending Theater setup very challenging. In calculating my screen brightness I'm very confused as to what my target should be. Through research, I've seen 25-30 ft-Lamberts. I've also seen a minimum of 8. That's all fine and dandy, but here's the calculations for my future setup:
***800 ANSI Lumen XGA (NEC LT150) projected on a 64"x48" Da-Lite High Power Model B Pulldown
***Extremely high ambient light, white furniture, white built-ins, beige carpet. Note: 90% of viewing will occur at night eliminating the ambient light problem, but the light furnishings remain.
Screen Brightness =(800/((64*48)/144)) * 2.8 => 105 ft Lamberts
Is this too high for my potential setup? Should I adjust the gain until I obtain a brightness value closer to 25 ft Lamberts?
25 = (800/((64*48)/144)) * Gain => 0.67
Should I be looking at a different screen material(Gain = 0.67) for this small of a screen size or should I aim for the brightest(105 ft Lamberts) possible image?http://us.f1.yahoofs.com/users/f7f70...F0rV8AL_xkyJ16