Prime wide-angle lens designed for FX-format Nikon F-mount DSLRs, this lens can also be used with DX-format DSLRs where it will provide a 52.5mm equivalent focal length. The bright f/2 maximum aperture benefits working in a variety of lighting conditions and also aids focus control for shallow depth of field imagery. Multi-coated glass elements increase contrast and maintain color accuracy by reducing flare and ghosting. An AF/MF switch on the lens barrel allows you to select focusing methods, with either setting allowing you to focus as closely as 9.8″ away. Seven-blade diaphragm contributes to a smooth out-of-focus quality when working with selective focus techniques. Compact, lightweight design incorporates a metal bayonet lens mount for added durability. Gold-plated electronic contacts convey EXIF data between camera and lens and also permit working M, Av, Tv, and P shooting modes.