Here we go, my test picture and crops tell it all:
Picture shot at around f/8, 1/320s and ISO 100 with my A7R and my DA*55 F1.4 lens put on it. MF focusing was done with focus peaking at 10X on the image centre.
100% crop of the picture centre:
100% crop of the picture corner:
More test samples would follow! :-P