A7R with 28 Cron and 90mm Macro Elmar
In short, 28 Cron is a 'no' (or at least a 'not really') and the 90mm Macro Elmar is a 'Yes, but'.
The files, as yesterday, are uploading (slowly!)
to here. The colour cast shots are half size, the others are full size if you want to download them. All of them have captions to help you see the F stop and all have full EXIF.
In terms of colour shading, the 28 Cron is disappointing. Not as bad as the 18mm Super Elmar but not as good as the 35 Lux FLE. In terms of edge sharpness, an unfussy user might be happy by F8 but the corners take F11. Another one for eBay I think; it was starting to look not wonderful on the M240 and is a fail on on the A7R.
The 90mm Macro Elmar is one of my favourite lenses with pretty much any camera it mounts on. Colour shading on the A7R is a non-issue and sharpness seems good though across the frame - I have not shot Test Shots as such, no brick wall types, because it was evidently just fine in normal use especially at F5.6 and pretty good at F4 and F8. Bit of CA, which cleans up nicely. The 'but' is merely that the use of magnified focus is tough with an unstabilised lens of this length (the subject is very jiggly and there is some Jello too) and that you will need at least a 250th and even that does not always work perfectly. But it is a small and lovely and light lens and very useful.
I am also uploading some more general snaps from these two lenses and one example purposely underexposed for the main subject and then given a +100 shadows boost for comparison. My opinion so far is that the A7R does not have quite the clean shadow behaviour of the D800E. It is very good, but the files seems lightly less pliable. More shooting needed and possibly at some point a comparison or two...