Originally Posted by NMJack
Art - are there (roughly) equivalent materials for the Da-Lite screens? I'm planning a 7700/MT700 PJ with a 133" screen and have been struggling to find useful info for screen selection. I posted an inquiry in the screen forum, but I don't think there is much traffic there. At this point, I'm considering a Da-Lite "perm-wall".
Basically, I'm planning a 133" screen at 15' throw in a 16 x 20 room with good light control. There are, however, eggshell cottage white walls and ceiling which I understand could affect the equation. Thanks for any advice you may be able to provide.
That's a big screen - my 140 is very marginal with a matte surface, and "off white walls". the 7700 has an extra 100 lumens but that sure isn't much, and the contrast enhancement stuff does more for bringing out low level detail than dynamicing up the brightness. I expect my new 128 Firehawk, which is high contrast (hc) and has a agin of 1.3, will buy me about 40% more ft candles than the old screen. But I'm also taking my walls to a dark rust color, which probably will elmiinate about 90% of the reflected light.
Based on my experience, you will definitely want a high contrast "white screen". In the Da-lite lineup, you'll want to consider either the Cinema Vision, or the HC Cinema Vision. or the HC Matte white. Problem is - I can't keep them straight as to which is availlable on fixed screens, which on motorized, etc.
Anyway, I would think first, the HC Cinema Vision (assuming you are sittting within the left and right edges of the screen. You get slight gain, slight rejection of off angle ambient light (walls - in your case), and a gain of 1.1. You can use all of the above. (If you can darken your walls - 30% of the theater experience is that you are only aware of the big screen, the rest of the theater basically appears black, or close enough you dont notice them.
The straight Cinema vision will do even better in terms of rejecting ambient light, and giving your image more overall brightness. The BenQ 7700 has really good contrast and on a standard 133" the dark gray that "blacks" create should be "black enough" to skip the HC version The extra gain might help you.
However if I had to guess, I'd pick the HC Cinema Vision. The last two on your list from dailite would be the HC Matte White, but I don't think that one is availlable on fixed wall. It is similar to the HC Cinema Vision, but I am lead to believe that the CV is better.
Lastly you could go with a higher gain screen (say 1.5 or so) but I don't know off the top, which one that is. Anyway the HC CV and the CV, as well as one of the HC mattes, should be available on the perm wall, or if you want to spurge on nice trim (a lot more $) the Cinema Contour screen, (similar name), with Pro-Trim. Avoid the Imager, which is iffy at large sizes since it uses velcro to adhere the surface to the frame. Certainly the perm wall makes it affordable.
Got it? -art