A friend and I are doing a HT for our boss and I have run across an issue with throw distance. He wants a 12ft wide screen but we need to mount the projector about 11ft from the screen due to a sloping ceiling and a support beam that comes out of the ceiling. We really need to mount the projector on the support beam which is right at 11ft from the screen. I don’t think mounting any further back is an option because the beam would be in the way.

Is there a 1080P 3D projector out there that can handle this?

Do I need to purchase special lenses?

Any help would be greatly appreciated. I have attached a rough layout of the room for reference.

Another choice is to look for a projector that has horizontal and vertical lens shift. This allows the projector to hang lower from the ceiling, to hang off-center, or to be otherwise in kind of an unusual spot and still provide the image dimensions one wants.

I have my Epson 8350 about two feet left of center, ceiling mounted, probably two or three inches lower than the screen. If I had justified it to the right instead of the left I probably could have lowered the projector several feet below the top of the screen, if I had wanted or needed to.