nikkor lens evaluation
I have a Nikkor 28/3.5 which is a great little lens but I was hoping a 28/2 would be even better. I bought one used and it looked mint - no marks on the glass, little dust inside. However when used wide open at F2 the performance was terrible. I am attaching two photos of the lenses on a tripod wide open to show you how much worse the 28/2 was. Now I realize my old one wide open is F3.5 so it's not a true comparison, but there is something wrong with the 28/2, right?
The 28/2 didn't seem to have these problems once stopped down to 5.6 or so, but it did not seem to be quite as good as the 28/3.5 until after F8. Stopped way down it looked better that the 3.5 but this was due to improved micro-contrast rather than better resolution.
I returned the 28/2 but now I'm wondering if the image quality will be noticeably better than the 28/3.5 - it really is a nice little lens. Will I notice a big difference if I get a working 28/2 for real world use, or only if I shoot brick walls?