<p>I have heard people commenting on the vignetting and color shifts with the Zeiss 35mm f2 ZM, but then there are also several accounts (including Steve Huff) of it being terrific with the A7R. To me it seems like each focal length of Biogon lenses have different levels of vignetting and color shifts, with 35mm f2 being one of the better ones. <br>
What makes me more confused is that the Voigtlander 35mm f1.2 VM is lauded as great with the A7R, yet when I see pictures taken with it wide open, there is a lot of vignetting and color shifts.<br>
I've never heard anyone compare these two lenses for the A7R and would like to get more information on these particular lenses. If they are comprable in performance, I'd rather just get the smaller lens with better ergonomics.<br>
I also plan to get a leica m6 next year, so this is why I'm looking for m mount lenses.</p>