Quote Originally Posted by LJSLATER View Post
I want one those for slide copying. I bought a step-up ring to use an El-Nikkor for that purpose, only to discover the filter threads on the lens were completely f***ed. I've had that El for years but never thought to look at the front thread!

Rumor has it the 55/2.8 is extremely sharp all the way out to infinity, would you concur?
+1. The 55mm/F2.8 Ais is a permanent resident in my backpack, along with the PK11-13 rings. The lens, as many have suggested, does just as well for 35mm landscape/nature work as it does for the "micro" shooting for which it was intended (?). Unless I know in advance that I will need the extra speed, oftentimes, I leave the 50mm/F1.2 Ais at home...