Originally Posted by Seegs108
The thing with the new Sony is that the 1000ES is going to have a far superior lens. ....
I would presume that the more expensive projectors would have "better" lenses than inexpensive projectors.
However, I've never run across any tests of lens "A" versus lens "B". Have you?
This is rather understandable in that, in most cases, the lenses are part of an integrated projector. Very high end consumer projectors and commercial projectors can use alternative lenses, in which case separate lens testing is possible.
By way of comparison, many of are familiar with SLR camera lenses. A 1080p/2K projector chip is roughly comparable to about a 6 megapixel sensor. A 2160p/4K projector chip is roughly comparable to about a 24 megapixel sensor. I believe that most decent lenses can easily resolve 6MP, but it likely takes very good lenses to fully resolve 24MP.
Hence I would expect that excellent lenses would be needed to fully resolve 2160p/4K. Of course viewers would need excellent eyesight to fully resolve 2160p/4K images from "normal" viewing distances too!
I suspect that designing / building excellent projection lenses may be easier / less expensive than camera lenses. Projecting to a flat surface. Limited zoom range. Limited focusing range. No autofocus, etc. One place it's harder: Large image circle required for wide shift range. Production volume comes into play of course.