I made a quick little test comparing the 35mm lenses I have. Below is a video comparing the breathing and colors, and attached are 100% crops to test sharpness. I'll let you make your own conclusions, but man, the corners on the Nikon are worse than I thought. If it's that bad on m43, I can't image what it must be like on a full frame.
Testing lenses at 35mm on Sony A7S2
https://scatteredlightblog.wordpress.com/2016/11/23/testing-lenses-at-35mm-on-sony-a7s2/
My Nikkor 35/1.4 is pretty sharp. It isn't as sharp as the Olly 45, but it is sharp. Only a few of my lenses are really sharp edge to edge, and for portraits I don't really want that anyway.
Sort of going on a tangent, but does anyone else like the character of older cinema lenses where the corners are somewhat smeared with blur?
It looks like you're new here. If you want to get involved, click one of these buttons!