Originally posted by blende8 How did you analyze the sharpness?
Did you do a focus series and did you check the corners?
I have found the Takumars to be worse in the corners always.
Ahhh...that's an excellent question.
Any time I'm debating sharpness I make sure that I used a tripod, MLU when appropriate, no filters, and absolutely no USM in post-process. I do several initial shots with each lens to magnify the focus to try to get exactly the same focus point (this can be a pain in the ...)
The primary point of these matchups is comparing 'real' photos between lenses - in other words, I'll take both lenses around and shoot shots that I would consider taking if I weren't comparing lenses. So this means that I might not examine extreme corner sharpness, or CA across the whole frame, etc. I agree that such information can be helpful (photozone.de does this well) but it is outside the scope of this challenge.
Maybe if one of the Takumars makes it to Round 2 I'll try some more detailed sharpness exercises.
Thanks for the comment,
Sean