I blame this forum for *forcing* me into a CIH setup for my theater.
I've recently finished it, and am still tweaking the PJ and the lens.
Setup: JVC RS50, Panamorph U480, Carada Masquerade 136" 2.35 mask/screen. Projector is ceiling mounted, center of the room/screen, using the Chief / Panamorph plate and motorized slide.
So with the PJ in 16x9, image centered, everything is fine, no spillover onto the left/right masks at all. Bring the A-lens into place, and the image border is shifted to the left, spilling quite a bit of the image onto the left mask, while the right edge is now short of the edge.
I've adjusted the lens mount to angle the lens as much as it allows, still not enough to bring it into place.
Any suggestions? The lens is mounted with the thick side on the right side - instructions indicated it didn't matter, but I wonder if this could be the cause?