post #1 of 1 Thread Starter  This could go in the theater
construction or projection screens forum, but with the Ultimate
3D thread and RED projector thread I thought I would post here.
I have an attic space that I am considering building a room
about 16x12 with 9' ceiling, I'll have to do some more
measurements but it looks like this will be possible without
having any angle to the room ceiling. I'll post more later but
you can get a little bit of an idea by looking at the house on
google maps...  I want to use the RED projector with a rear
mirror setup and a 3D passive rear screen. Hopefully I can
utilize the space behind the room and the angle of the ceiling
to make a mirror setup work.  I have seen a polarized DepthQ
modulator in youtube work with a rear mirror, does this maintain
100% polarity?  Harkness has a rear 3D screen that has an
extinction ration of 220 and gain (transmittance) of 1.2.
Compared to their front 3D screen Spectral 240 that only has 130
extinction ratio and a 2.4 gain and is still c