The new AF-S NIKKOR 85mm f/1.8G from Nikon is a fast f/1.8, compact FX-format prime (fixed focal length) medium telephoto lens. It offers clear, natural image reproduction for stills and HD video. Engineered for use on Nikon’s FX-format D-SLR cameras, the lens features Nikon’s Internal Focus (IF) system, delivering fast and quiet AF. Its fast aperture is great for capturing stills or D-Movie HD video in low light situations or for portraiture, where it does an exemplary job of rendering softly focused backgrounds. When mounted on a DX-format D-SLR, the AF-S NIKKOR 85mm f/1.8G provides an effective field of view of 127mm.