The Nikon NIKKOR 28mm f/2.8 Lens offers superior sharpness with quality construction throughout, in a compact package. This FX-format lens features a fast f/2.8 maximum aperture and Close-Range-Correction (CRC) which maintains image quality throughout the focusing range down to its minimum focusing distance of 8.3". The manual focus lens also utilizes Super Integrated Coatings for minimizing ghosting and flare. Additionally, when used on DX-format camera bodies it has a 42mm equivalent focal length. A physical aperture control ring is available for making adjustments by hand and it accepts 52mm threaded filter. Also, it has a 7-blade diaphragm for smooth out-of-focus areas.