The Tamron SP AF70-200mm R/2.8 Di LD [IF] Macro for Nikon AF Mount is the newest in Tamron's long line of high quality lenses. This light weight ultra fast telephoto zoom lens has a maximum aperture of f:2.8. No matter where you zoom, this lens will retain this fast aperture, great for low light or sports photography. The built in macro feature of this lens gives great close up capabilities with a magnification ration of 1:3.1. Designed to use on both full frame and APS sized sensors and constructed with 18 lens elements in 13 groups you will be able to product razor sharp images no matter what camera body you use. Attach the included tripod mount for enhanced balance and stability. Feature packed, this lens comes standard with lens hood, case, and Tamron's unsurpassed 6 year manufacturers warranty. 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