Well after months of owning both 5DS R and a7R II I have finally taken the time to test each camera using the same lenses (all of my lenses) at all the main apertures (up to f/11). The test shot was a landscape out at nearby West Point Lake and I was able to fix the same views as well as focus on the exact same twig.
I'm just now going through the images - I've looked at 11-24mm and 16-35mm f/4 IS so far - and the results are really surprising me. The extreme corners of the a7R II shots are consistently sharper. Only a hair sharper, but sharper nonetheless. Wow. Gives me renewed confidence to go ahead and part with the 5DS R.
Going back to look at more lens tests, but just had to pop in and share my findings.









