AVS Forum Special Member
Join Date: Apr 2000
Location: W Simsbury, CT, USA
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I think you got his suggestion backwards, but maybe I'm the one who is confused. At 25' I should think that you would be setting the projector's lens to the max zoom length (to shrink the image), while at the closest distance, you'd be "un-zooming" the lens. My thinking here (using camera zoom as a parallel) is that you are needing to utilize the zoom when you are farther away, and wanting to be at the widest angle setting when closest to the "subject" (in this case, the screen).
In any case, the argument in favor of positioning it as close as possible to the screen is that you get the maximum lumens, and an argument (I think) in favor of positioning it as far away as possible is that you might get a slightly sharper picture / minimize convergence issues. Again, though, someone feel free to correct me if I've misstated anything.
I'd much rather watch a great movie in B&W at 240 lines of resolution than a lousy movie in 1080p with lossless audio.