Is it my imagination or does the A7ii sensor have a slight bit of
polarization effect to it? I noticed this with the horizontal version
of the Knik River photo. Photos taken at wide-angle have that same
non-even sky look of a polarization filter on the lens.
The comparative images taken with the E-400 and GX85 didn't appear to
have the same characteristic.
In all fairness, this only became visible because of the extreme
heavy-handed processing that I seem to like to do these days.
Themed Olympus Photo Exhibition: http://www.tope.nl/