I did a search on this thread but could not find a discussion regarding the best settings to use for 3D.
I have a CIH setup on a Screen Innovations Solar 4K ( 1.37 gain) 2.35:1 @ 120" diagonal.
The projector is 13.5 feet from the screen, the room a bat cave and dark flat colors all around.
2D is perfect without anamorphic lens and zoomed to fit the 2.35
3D using 16:9 AR makes a 96" diagonal screen but I find it too dim still.
Dedicated Theater: Sony VPL VW 675ESB & JVC X950RU/RS600 , Panamorph DC1 Anamorphic Lens, Draper TecVision XT1800X Screen, 2.40:1 132" diagonal curved 36FT radius, Anthem 1120 AVR , 7.2.4 Atmos, Paradigm Monitor 11 fronts, Monitor 3 Center, Monitor V7 Rear, SA-ADP In-wall Surround, Niles DS-7 In-Ceiling, Subwoofers: (4000 watts peak) Klipsch RW-12 + SVS PC13-Ultra