I've tried the 28 Summicron and 28 Elmarit Asph on A7, and wasn't happy with the corners (without stopping down a lot); but what about the older pre-aspherical Elmarits? Has anyone tried one?
I'm asking because I've generally had better luck covering the Sony sensor with older Leica lenses (35 pre-A Lux, 40 Cron, 50 pre-a Lux) – and not much luck at all with M-mount Zeiss.
Please advise – perhaps there's even a thread or post here that I missed.
(Edit: BTW, I meant Elmarit M, not R.)