Quick view 45mm GN Auto NIKKOR Lens f/2.8 Nippon Kogaku, Japan GN Auto NIKKOR 1:2.8 f=45mm Nippon Kogaku Japan Very clean, factory converted Auto Indexed GN (Guide Number) 45mm Auto Nikkor lens. Can be used on compatible Nikon DSLRs with manual focus. Small, compact “Pancake” lens. Introduced around in... View Details Compare