A compact and robust wide-angle lens is a necessity in any photographer's camera bag. With a focal length of 21mm and a maximum aperture of f/3.2 the PENTAX smc-DA 21mm f/3.2 Limited meets the prerequisites to become a standard in your digital SLR kit. The lens offers numerous high-standard features in a very compact aluminium housing. An aspheric lens element is provided for the highest possible photograph quality. This exceptional 21mm lens contains a floating element for exceptional close-focusing capabilities.