Vivitar 28-70mm f/3.5-4.8 Macro is a standard zoom lens specifically designed for Nikon F mount cameras. The AIS feature indicates the lens has a prong that will meter couple to older Nikon 35mm manual focus SLR cameras and internal modifications to allow faster and more precise shutter priority and programmed exposures by way of linear aperture movement. Offering Vivitar's classic all-metal, durable structure and delivering high quality optics. Macro focusing is possible at the 85mm setting allowing a distance of 2'. Its focal length range is suitable for indoor and outdoor settings at 28mm and portraiture at 70mm.