Originally Posted by Bhunt240
Yes i know it is a large screen its the biggest i can fit and still be able to fit trim up top and a platform on the bottom etc. Thats the reason we built our basement with 9.5' ceilings so i can fit a 200ish screen.
*Screen: i have 2 options a local big theater closed and i can get some of the screens they removed or ill likely go with the carls screen
*front row is 11' away from the screen
*walls will be dark and ceilings will be black
*video source will be oppo blue ray, xbox oneX, DirecTV reciever, computer
Before deciding on a screen size the projector should be used an a surface for a few weeks.
A very general ratio is 10-12" in diagonal for every foot in distance. There may be seat rows after the first, but 185" from 11' is very close.
As rekbones said above, the highest gain white AT screen is ~0.95. I don't know what gain the theater screen has, but I doubt it's 1.1. Very likely 0.8 or lower.
While there is some preference on how bright a screen should be, for an 185" AT screen there is no Home Cinema projector I could recommend. You would need some sort of small venue unit, which is a few times the budget.
For SDR the minimum recommendation is 12-15fL, but HDR needs a lot more. With lamps aging the initial brightness should be higher to compensate.
Even some of the brightest projectors in HC, the Epson HC3700 and HC3800 (for 4K) are probably not enough. They will have to be used in High lamp and placed closest to the screen to get the highest brightness.
The HC3700 is ~15% brighter than the HC3800.
Use this calculator:
So I highly recommend the diagonal be lowered, like ~150".
The HC3000 series don't have great blacks/contrast. The 5040/5050UB is better, but it would be at the limit with an 150" screen on an AT screen of unknown gain. For SDR it would probably be fine, but not sure for HDR.
Getting a Panasonic UB420/820/9000 will help with HDR, but I would still not go over 150". No gaming, just movies/streaming.
The 5040UB has a 10GB HDMI which limits some streaming services for 4K HDR and 4K gaming.
The 150" recommendation is for watching with lights off. With some ambient light you need an actual light cannon.
LE: also for lights off viewing, with a smaller screen of course, DLP projectors have better motion handling so better for sports and gaming if it's fast paced. But black level will be lacking.
The Optoma UHD52ALV is somewhere between the 5050UB and HC3800 brightness wise.