AVS Forum Special Member
Join Date: Aug 2014
Location: Southeastern Michigan
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The best thing to do is go to the Under $3,000 projector forum and ask there or search specific projectors and ask in that forum. Actual users are the best feedback. I know when the BenQ TK800 came out, some were using it on a 150" screen and said the 3D was ok. A lot of the brightness illusion comes from how close or faraway you sit as well. I owned a TK800 myself, but thought the 3D was just not bright enough. I have an Optoma UHD51ALV now for a 160" screen, but it is a high gain screen (about 1.80 gain based on my seating position) and it works fine for 3D. I do not use Cinema for 3D, I use Video or Graphics. I have thought about getting the UHD52ALV for an even brighter picture. A lot of 3D movies (Marvel, Star Wars, etc.) have dark scenes, and that is problem for all 3D projectors these days. I must say, the 3D image of the UHD51ALV is the best 3D image I have seen on any projector I have owned, including the highly reviewed Epson 5040UB, which I had for one week--way too much ghosting--I had to reduce brightness quite a bit to avoid it--it was great for 2D, though.
Of course, you could always mount the projector for 3D closer to the screen for a smaller image and have the brightness you need, but definitely a trade off.