I've been reading this forum voraciously, and I think I'm close to a solution for my CIH needs.
My situation: I'm building a Home Theater system for my 40' catamaran sailboat, which of course has tight limitations.
Distance from projector lens to the screen is 8.5'. I need a CIH setup with 30" of screen height. The width of the blackout cloth screen will be 81 inches, so the limiter is the height which can't exceed 30". So I figure I might as well get the max size out of wide screen material.
As I understand the CIH subject, my ideal projector would send 2.39:1 content at 30"X70" for a 76" diagonal, then 16:9 content at 30"X54" for a 62" diagonal, 4:3 would be 30"X40" for a 49" diagonal.
My question is which projector can provide this 30" CIH image size from 8.5' away and adjust from 2.39:1 to 16:9 to 4:3 without changing the height of the image? Do I need to manually change the aspect ratio and/or zoom every time or can this be done automatically?
Oh yeah, I'm trying to stay under $3k for the projector, and a smaller form factor is desirable due to limited space.
Thanks for your advice on this.