Mine seems to show some vignetting/shadowing of the left corners of the image when
stopped down to more then 4. It's worst at T16, there you see that the edges are blackened
with a rounded shape.
How can this be? Is this normal lens performance? No film test yet, this is just what I'm
seeing on the ground glass. What can be the reason for this? I'd more expect this kind of
shadow when the lens is wide open, but not when stopped down?
Edited by Marc Roessler, 29 February 2008 - 10:47 AM.