DT 50mm F1.8 SAM is a compact, lightweight, high-quality lens with a 50mm focal length (35mm format camera equivalent: 75mm) that is ideal for portraits & general-purpose photography. It is designed exclusively for use with a digital SLRs incorporating an APS-C type image sensor. The DT 50mm F1.8 SAM reduces the need to carry heavy gear when shooting, yet offers crisp, natural imaging that is ideal for everything from portraits to scenic photos & snapshots. It also boasts a large, bright F1.8 maximum aperture & a circular aperture mechanism for smooth background defocusing. Distinguished by ultra-sharp imaging across the focal plane, the DT 50mm F1.8 SAM also features a minimum focusing distance of 0.34m & a maximum magnification ratio of 0.2. In addition, a Smooth Autofocus Motor (SAM) is used to drive the focusing lens group.