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

This autofocus fisheye lens is designed for use with digital SLR cameras equipped with APS-C size image sensors. The Nikon version produces a diagonal angle of view of 180� (154�for Sigma, 167� for Canon). The diagonal field of view of this fisheye lens produces striking images with exaggerated perspective and distortion. The minimum focusing distance of 13.5cm/5.3inch, and maximum magnification 1:3.3 allows subjects to be as close as 1.8cm/0.7inch from the lens' front element. This close focusing capability allows close-up photography and also it is possible to make use of large depth of field that covers wide range of subjects. The Integral hood blocks out extraneous light and the Super Multi-Layer Coating minimizes flare and ghosting, creating superior image quality. The HSM (Hyper Sonic Motor) ensures fast and quiet autofocusing and allows full-time manual focus override by rotation of the focus ring. This lens is supplied with a gelatin filter holder at the rear, allowing the use of gelatin filters. more info