Very clever, these folks at Mitsubishi. Not only is there support using a 2.35:1 screen with an anamorphic lens, but this Mitsubishi can be used without a motorized sled, to watch 4:3 and 16:9 content. They accomplished this feat with a second anamorphic mode specifically for that purpose.
This is a different approach than Panasonic's PT-AE4000, which needs no anamorphic lens at all (less cost). Still, for Cinemascope (2.35:1) movie watching, the Mitsubishi uses all of it's pixels while the Panasonic approach does not, so you have a a smaller pixel structure, and should have a crisper image with the Mitsubishi. That's doubly true, since the Mitsubishi produces a sharper image than the Panasonic to begin with.
OK, time to consider the HC6800's picture quality.