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I'm looking to purchase a projector that will end up being mounted to the ceiling. Currently, the room I'm looking to have it in is my living room. It's approximately 22x11, with an ~8 foot ceiling. At the back of the room there's a small setback of 29" (included in the overall 22').

I've been using this calculator LINK to try and figure out screen size and all of that, but what I'm not able to figure out, is how close would one be able to sit without interfering with the projection onto the screen?

Any help? Thanks.
Edited by abshole - 7/23/13 at 6:01pm