Originally Posted by SimpleTheater
The problem for me is I don't want to see the projector. I have a black ceiling and with the projector behind me, I get the feeling of being in a real theater. Due to the width of my room and people sitting to the sides, higher gain screens reduce contrast and brightness to those people.
I sit at 14' and the projector is at 13', but I can imagine if I sat back at 18' I most likely wouldn't want the projector in the same position.
Originally Posted by erkq
It's not the same result. You get more CR in the "further back" position. A lower gain screen does not give more CR. But the optics when zoomed to a smaller image scatter less light and do give more CR.
Sure, but then you're using a higher gain screen which doesn't produce the same black level, and doesn't allow as good of a viewing angle which someone touched on earlier. Many ways to do it, there are always going to be trade-offs, just depends on what is more important to you and the level of ambient lighting in the room.
Originally Posted by cdnscg
What your opinion of a lower gain screen? 1.1 or less than 1?
Also, I would appreciate anyones advice on pj positioning concerning the following. The screen will be 120", and therefore will sit 1.5 x for approx., 15' away. I have a basement window on the side of the room at approx.. 16-15'. Would it be okay to place the pj at 14' which would result in it being in front of the seating area or does this matter. I'm concerned that, although the window will have shades, it may have some detrimental effect by interfering with the light from the pj if the unit is placed at or after the window. ie: 15' - 18'.
I personally use a Carada standard Cinema White screen which is advertised at 1.0 gain. My room also has no windows and a shortish throw at 13' for the PJ, I was not worried about brightness.
With some ambient light from the window you may want to use a higher gain. I also would place the PJ in front of the window. There is no detriment to having the PJ in front of you, other than that you can see it. If the room is pitch black it should not really matter, and if it so happens to be far enough back your peripheral vision won't see it anyway.