Nikon AF FX NIKKOR 50mm F/1.4D DSLR Lens with Auto Focus for Nikon DSLR Cameras The AF NIKKOR 50mm f/1.4D DSLR Lens from Nikon is a very effective standard length lens compatible with both FX and DX format Nikon DSLRs Lens construction: 7 elements in 6 groups Closest focusing: 0.45m/1.5 ft. Accepts 52mm filters;Maximum Aperture f/ 1.4 ;Minimum Aperture f/ 16 Includes 52mm lens cap, rear cap Lens not zoomable Lens not zoomable