Peire wrote:
Samuli,
It seems that the Biogon G 28/2.8 performs much better on the A7m,compared to A7/R.Is it like this or just an illusion?
I would say so, based on 1hour 50min shooting experience on crappy fading overcast light... G28 was pretty much impossible lens with standard A7 and A7r, I did use it for close-ups @ f/11, where it was not all bad. Now with A7m I think it will be one of the most used lens during summer 2016. For focusing distances < 1.5 meters it's looks really good, and I really like it's focus plane rendering style and boke/DOF transitions. However I would not use it for landscapes, even with 0.8mm sensor cover glass there seems to be some field curvature.
I have not yet tested, but I hope that Kolari-mod restored Contax/Yashica mount Distagon T* 2.8/28 rendering to same level it was with Canon 5DmkII (or better). If that happens, then the C/Y mount 28mm will be my 28mm landscape lens for summer 2016 - it definitely is not as sharp as Leica Elmarit-R 28mm f/2.8 v2, but Leica's rendering style is nothing exiting even it's "mathematically" very good lens.
Samuli