Here is what the C/Y Zeiss Distagon 21mm does near the far right corner. I consider this at the edge of what I would consider acceptable. As you move towards the center fo the frame, this isn\'t an issue with the 21mm Distagon. This is wide open (f2.8) at ISO3200 on a 5D mkII:
Here is the Zeiss 35mm f1.4 wide open at 3200:
May 11, 2010 at 07:34 PM
Previous versions of Chris VenHaus's message #8461243 « Lenses for night sky »
