rfaspen
[insert pithy phrase here]
I suspect both our lenses are quite sharp. I like to play on the "black is better" trend 😎. Of course there may actually be some variation over time with this 90 summicron....it was produced for quite a while. Mine is more toward the later years of production. It's a very nice but heavy lens. I plan to keep it until my son has to decide what to do with it