Classically styled 50mm FX-format prime (fixed focal length) lens designed to match the Nikon DF but equally stylish on any Nikon D-SLR Fast f/1.8 maximum aperture for brilliant low light performance, freezing fast action with high shutter speeds and beautifully blurred backgrounds (booked) Superb NIKKOR optics and Nikon's innovative Silent Wave Motor (SWM) for ultra-fast, near silent precision autofocus with seamless manual override Compact, lightweight design - an outstanding travel companion and everyday lens