Why there are so strong CA's in the corners of studio comparison? A7r3 looks less sharp there than r2 which has clean color.
Maybe lens? Raw processing?
The moire or lack of moire in color wheels is great.
Not quite, unless you have a solid or non moving subject. The same issues appear to apply to Sony's solution, (which IMO is much less attractive than Pentax or Olympus). However that is up to the user.
The single biggest drawback to any pixel shift solution, is that none of the software can account for very much movement between the frames. In landscape work, this is very important, as even cloud movement can create aliasing, and leaves with much wind, all bets are off. And of course you are still required to use a tripod which may or may not be a big issue.
P1 has plenty of room left with 100MP as you can do a lot with a single 100MP file.
I used the K1 for over a year, loved the camera and the files. Pixel shift made me a believer, but the lack of both good raw conversion from either Adobe or Phase One (C1), pushes you out to the 3rd party solutions, none of which have the toolsets I am looking for.
From looking at the first attempts on the Sony, I am seeing the same issues as Pentax. So hopefully Sony can push forward a better software conversion. But if the Sony software that has to be run only outputs as a jpg or tif, again you have lost a lot of file leverage. The best solution will be to see Adobe or C1 or both have some internal process that can take the 4 raw files, and convert them to a single raw (similar to how Pentax does this in camera).
But still you have the same problems as always, i.e. movement. And folks, if you think that the Electronic shutter solutions from Phase or Fuji have problems, try shooting a pixel shift on a windy day even a slight breeze will cause aliasing that is mostly not correctable even with the solutions not from Adobe. The ES handles this type of movement much better at least from what I have seen.
There is no doubt however that when the conditions allowed it the Pixel shift output from Pentax was superior to anything I have seen from a 35mm DSLR, both in resolution and noise. The files are considerably cleaner, at all ISO ranges.
So I wish Sony the best with their solution, but I don't see P1 getting to worried about it, they have other problems to contend with in MF currently.
Paul Caldwell