Originally Posted by HumbleHub
Im actually looking to downsize to a 48x86 or so screen. Could the theory be a lot easier with this size?
That 48" height will make finding options MUCH easier because it is such a common material width.
That smaller screen-size will also allow your projected image to be much brighter than before which will both help in widening your options to allow for things like darker top-layers or wider viewing-cones at a given surface darkness AND it'll allow your projector to fight more light with simple brute strength of brightness..always a good thing to have for projecting in a lit room.
For the most effective screen, people will be better able to help if you can try to nail down a couple more numbers. Besides screen-size (which you've mentioned), do you have a rough idea how far you'll probably be sitting from a screen that size and about how wide the seating arrangement will be?
Knowing that can allow suggestions that'll give you juuuust the right size of viewing-cone which means you'll have less need to make sacrifices in areas like surface-darkness and peak-gain.
-The narrower you can allow the viewing-cone to be, the less your screen will be affected by ambient light. This will determine how thick/thin your diffusion will need to be.
-At 48"x86" with the 8350, any gain from 0.6 and upward should provide over 16ftL..with a 1.0gain giving above 25ftL. Going much higher might get a little bright for nighttime use, but you're unlikely to find anything bright enough to actually cause problems.
-The screen's dark surface works with the boosted peak-gain to give you back a good chunk of the contrast you'll lose in a room that's too bright.
Still, any light hitting the screen from farther back (particularly from behind your seats) will washout any screen..even the darkest or most special. You should still try to control the room lights and sunlight to whatever extent you are able. Light coming from nearer the screen's wall and lights pointing away from the screen are the easiest to use without ruining your image.