Originally Posted by rabident
How large a screen do you think rs40 double stack is capable of? For 2D and 3D. What did you finally settle on for a screen? I am hoping to do a 13' wide 16:9 screen.
Hi rabident - sorry haven't been online here in over a month - just got incredibly busy with work
I'm using a 133 inch Black Diamond 2.7 screen, with 2.40 Aspect ratio
To acheive full screen with 2.40 AR material, I am zooming out, and the picture is plenty bright, even when the polarised filters are installed for 3D. However, the only caveat is that I'm in a fairly light-controlled room.
For 16 x 9 material, I'm zooming back in till the vertical height matches the screen.
But having seen how good the brightness is on the larger screen when zoomed out, I've decided to replace my screen with something that is 16x9, with about 140" to 150" diagonal.
This will ensure that I don't have to zoom in or out any more to change ratio - I will keep projectors at same zoom and shift 100% of the time, and merely flick a button for top and bottom masking to slide in when I have 2.4 AR material
Unfortunately, Black Diamond 2.7 doesn't go this big without seams, so I'm on a hunt on a "back burner" basis.
Note also that you won't be this bright if you are using something other than a polarised setup with these JVCs, as you'll lose more light. The JVC's really are perfect for polarised, thanks to their pre-polarization.
So the answer to your question, is that I'm running the equivalent of a 12 foot diagonal 16x9, when I am zoomed out for my 2.40 material, and the brightness is great, under light controlled conditions. I think I could stretch that to 13 or 14 feet diagonal at 16x9 with no problems, based on what I am seeing now. However, remember I am fairly well light controlled, and my screen is a 2.7 gain (which is fairly standard for a silver screen).Edited by rdjam - 7/18/12 at 11:31am