The tiniest details are always so interesting . . . the lens here is an old one, probably from the 70s. It is an Elicar manual focus macro lens, which can do a 1:1. I think it is very similar to the Nikon 55mm macro. It has a great feel to it, and the beauty of this lens is its diversity – use it like a standard 50-55mm or use it as a macro. One of my favorites!