Super Fast Telephoto AF-S Lens with Vibration Reduction and new Nano-Crystal AR coat. Nikon's exclusive Silent Wave Motor enables ultra-high speed autofocusing with exceptional accuracy and powerful super-quiet operation. Vibration Reduction (VR) technology offers the equivalent of using a shutter speed 3 stops faster. In addition, active vibration mode selection possible for use in active situations such as a moving boat, car or plane and provides VR performance with Automatic detection of panning. Internal Focusing (IF) design for smoother focusing. Exceptionally high optical performance; compatible with both 35mm and digital SLR models. Three ED glass elements effectively compensates for magnification and virtually eliminate chromatic aberration Meniscus protective glass element to overcome internal reflections from digital imaging sensor.Focus Mode switch enables quick response to changing situations with quick-switching between M/A (Manual-Priority Autofocus) and M (Manual Focus) modes. AF operation switch enables easy selection of settings. Focus Preset function instantly recalls a preset focal point. Focus Limiter switch limits AF-servo movement to a selected shooting distance range. more info

Fits Pentax Digital SLR Camera models / Fully Automatic Diaphragm / Compact Size / Includes Lens Hood / Accepts 52mm Filters Metering System - TTL open-aperture metering Minimum Focusing - 3.61 feet Filter Diameter - 52mm Maximum Magnification - 0.24 Maximum Diameter - 2.6 inches (66.5mm) Maximum Length - 3.1 inches (78.5mm) Weight (w/o Hood) - 9.2 oz. (260g) Hood - PH-RBB52 Equivalent focal length to 75mm-300mm in the 35mm format Compact dimensions with minimal aberrations Responsive Quick-Shift Focus System allows instant shift from AF to MF The image circle is designed to match the CCD used in PENTAX digital SLRs Comes with a lens hood to minimize flare and ghost images more info

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 and general-purpose photography. It is designed exclusively for use with a digital SLRs incorporating an APS-C type image sensor. Compact and weighing only 170g (approx.), 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 and snapshots. It also boasts a large, bright F1.8 maximum aperture and 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 and a maximum magnification ratio of 0.2. In addition, a developed Smooth Autofocus Motor (SAM) is used to drive the focusing lens group. more info