On May 17, 2019 at 21:48, FunHouse Texas said...
It cannot increase the actual resolution; there are only those original 1920 x 800 pixels in the 2.35:1 source to begin with.
But it does use all the pixels on the projector’s imaging chips, which is where you get the potential for added brightness. The downside is A possible loss of resolution due to the added processing and optical elements involved. The latter could also potentially decrease image contrast.
You don't get how this works. 1st with anamorphic, you are not dealing with 1920x800 pixels in the 2.35:1 - the 2.35:1 is using all the 1920x1080 pixels of the format (encoded anamorphic - that is what that means). It is stretched vertically in the anamorphic format.
The external lens then stretches that back out horizontally to the correct 2:35.1 ratio on the screen. AND uses all the 1920x1080 pixels to do it. Without this method, you would be doing as you mentioned, just using 1920x800 pixels; and losing resolution.
Back in the days of the good ole DVDs, you had to make sure you bought the disc with the 'anamorphic' format on it and simple not letter boxed. Or you didn't get the resolution benefit.