Well, I lugged the 180/4 APO CV & A7RII with me today and managed to take a few hand-held images that I tried to be really careful for critical focusing. IBIS was on and I shot ARW files.
I processed them in ACR with my default processing (sharpening and typical curves adjustments). I then inspected them at 100% in PS6 after conversion.
Full Image @ f/4:
Left Edge 100% Crop @f/4:
Right Edge 100% Crop @f/4:
This is wide open and it gets a tad better at f/5.6, but what do you guys think? I have barely shot this with the A7RII, so perhaps my focus was just always off with the D800 and A7R (which didn't steady the image when hand-held, which is most of the shots I made with it).
It looks fairly sharp to me, especially considering the atmospherics of the morning. If anything it lacks some snap to it or biting sharpness per se, but it seems like it's doing the 42MP of the A7RII pretty good justice as we say.
It could also be that the A7RII sensor design works better with this lens than the D800 or A7R due to the BSI design. Or, more likely, I can accurately focus this lens with the A7RII while I could not with the D800 (certainly not using the OVF and LiveView on the D800 is pretty bad due to line-skipping).
I may still grab the cosmetically-challenged version that I found and keep the better copy - if they are in fact optically different in their performance.
I will also get out the 180/3.4 and do a direct comparison between them at distance and up close.