On May 8, 2018 at 22:20, mark65 said...
I'd take a step back and ask yourself is this the best application for a projector. If it's near a kitchen, I'd say there's probably going to be a lot of natural light to deal with as well. With a 26' throw, you're going to need a lot of light output.
Hang a TV on the wall and save yourself the headache.
Throw distance does not affect light. Screen size does.
The bigger question is what projector is he going to use with a 3.25 throw ratio lens and 250% lens shift.