Figure total screen area in Square Feet. A 1.69 110” diagonal screen has 36 sq ft (96"X54")/144=36. multiply that by the desired FL you are shooting for – (36 X 23) = 828 total lumens.
Figuring 50% bulb loss, you would shoot for a “rated” output of 1656 if you are using a screen with a gain of 1.0. If you had a gain of 3, you’d want a projector with 552 lumens.
So is it a better investment to get a projector that does more lumens, or a high gain screen to help out with a lower lumen count from a projector?
I think the rest of the thread answered the question...it appears the projector with the higher lumens is the better bet, which is what I would have guessed.
If I do go with a 110" screen, what would be an optimal seating distance for viewing 1080P? What about a 720P cable broadcast or even a 480P DVD?
