PENTAX SMC DA Camera lenses

PENTAX SMC DA - Designed for exclusive use with PENTAX KAF-mount digital SLR cameras, the new lens offers 4X zoom coverage in the telephoto range. Further, the lens features an (...) See more See less

angle of view from 31.5 degrees to 8.1 degrees (equivalent in focal length from 76.5mm to 306mm in the 35mm format). As with all DA-Series lenses, this DA 50mm-200mm features a responsive "Quick-Shift Focus System" that allows photographers to instantly switch the focus mode from auto to manual with a slight twist of the focus ring. Coupled with a simple, functional design and the elimination of an aperture ring, this new mechanism considerably improves operability. The lens also incorporates an Extra-low Dispersion (ED) glass lens element and two aspherical lens elements for true-to-life image reproduction and overall size reduction. The image circle in DA-series lenses is designed to perfectly match the 23.5mm x 15.7mm size of the CCD used in PENTAX digital SLRs to optimize camera performance. The new design also contributes to a drastic reduction in size, weight and production cost, compared to 35mm-format counterparts with similar specifications. Focal Length 50 - 200mm Equivalent to 35mm format 75 - 300mm Maximum aperture f/4.0 - 5.6 Minimum aperture f/22 - 32 Angle of View 31.5 - 8.1 degrees Construction 11 elements / 10 groups Focusing Range 1.1m - infinity Magnification approx. 1:4.2 (0.24x) Filter size 52mm Mount Pentax KAF - Bayonet Weight 255g Dimensions (Length x Diameter) 66.5mm x 78.5mm Kit Content Front cap Rear cap Lenshood Special Features Quick-shift focusing system 0 stars No reviews have been written yet Share your thoughts with other customers… write your own review 1 (Description excerpted from: Waltersphotovideo)