I must be careful not to allow buyers remorse.
So the Sammy 50 f1.4 was waiting for me when I got to work today, but I had no time for a lunchtime test and only managed a couple of pics this evening in the garden while it was raining. Finally downloaded images: LR 5.7 won't play as expected, but PhotoRaw 2019 is happy.
Initial conclusions:
AF hunts like a b*st*rd and 'auto' is absolutely the wrong mode for this lens - DO NOT let the camera choose what to use for general purposes.
The lens is as sharp at f1.6 as a Nikon 50 1.8 AF-D is at f2.
Smoothest bokeh I've ever seen anywhere.
CA is no worse than the Sony 50 f1.4 I also own and quite similar to the Sammy 85 f1.4 manual lens.
Once I can persuade myself to sit down with the manual for a couple of hours I'll go through the menu & set up user patches. Current plan is to have U1 with spot AF, spot metering, single shot, EFCS, aperture priority. U2 manual focus with peaking and the rest as above. General user mode to be eye-AF and possibly auto ISO too.
Other thoughts - ISO 12800 is pretty close to 6400 on the D610, IBIS works down to 1/5 sec but not 1/2 sec with a 28mm lens and seems OK at 1/30 with a 50mm lens.
Can't comment on colours etc because I'm having to re-learn processing in a new package at the same time as the camera. I understand why some don't like the shutter button - all squishy and imprecise.
I have a Fotodiox Nikon F to FE adapter that I need to return because the click-stop for setting aperture on G lenses doesn't work, and I want to be able to use my Sigma 12-24 with this body.