Nippon Kogaku 50mm f1.4 Nikkor-S diopter so it's still weird- the

so it's still weird- the winder in on the bottom

These are lens mounts on a flange

good locks and smooth movement

A rare Leica thread mount version of the modern 50mm f1

The Minolta Rokkor PF 58mm f1

Nippon Kogaku 50mm f1.4 Nikkor-S diopter so it's still weird- theThis 50mm f1. 4 Nikkor S is an early Nikon lens, back when Nikon was still Nippon Kogaku. Optically in good condition, with only minor dust; focusing and diaphragm action are good. This lens has been AI modified, so it will fit on many modern Nikon cameras though its not the cleanest job, so this might not be the right lens for you if youre precious about cosmetic condition. Also, theres an engraving on the barrel. A good working lens, though.