Well, I managed to read the whole thread! Great job and kudos to all of you all who have stuck with it, advising us about to leap into HP.
I've moved, and my HT will change. Now I have a 23 ft wide x 33 ft long room with a truncated vault ceiling max 13 ft high and about 6 ft wide at the top. There is a fireplace at the far end of the room directly opposite the entrance door along the 33 ft axis. The room is light in color with several floor to ceiling windows and serves as a game room/family room with a pool table on the opposite end from the fireplace, so there will be some ambient light. Clearly not my old batcave but what can you do.
Could I ask your opinions on this setup: recess mount a Da-Lite 139" wide Model C electric screen into the ceiling with a scope format screen. It will drop down in front of the fireplace. Should be 58" high, with about 5 ft of black fabric for the drop, placing the bottom of the screen 3 ft off the floor.
There will be an 8ft wide couch, head position about 15 ft from the screen, with couches on either side (I know the off axis will be killed in these, but that's WAF)
The big questions are: If I mount the PJ on the back wall, does that change the angle of incidence for calculation of gain, or is it really just the distance above your eyes? Either way, if it is 7 ft up, the angle will be about 15 degrees, apparently acceptable. If I do mount it way back there, does being at the max zoom reduce lumens? Looking at the PJ Central ft-lambert calculator, it seems zoom does drop output. I guess I could mount the PJ lower and off the the side of the door frame, but that introduces another angle. The other option might be to make a credenza behind the sofa with a motorized popup to raise the PJ and be closer to the ideal angle, but that seems awfully complex and possibly noisy. Finally, are you all using anamorphic lenses or just zooming? and, if zooming, are the black bars noticable enough to benefit from masking, or are they still really black?
Re PJs, given this possible setup, are the RS-1 and Epson 1080 UH still hot tickets?
Thanks much-I'd appreciate comments.