I shoot mostly B&W and own a Monochrom and A7R and would like a circa 18mm lens for both ideally. I am happy to use cornerfix to sort colour issues out on the A7R for colour images, but as the majority of images will be in B&W, I am most interested in corner smearing.
I have heard the 18mm ZM Distagon has great corners on the A7R due to retrofocal design. Can anyone speak from real experience on the corner quality I can expect and overall performance of this lens on the A7R.
If the 18mm ZM is not really very good in the corners on the Sony, I will be patient and await new Sony Zeiss offerings, but there may be a chance to kill two birds with one stone here!