Pentax HD Pentax-D FA 70-210mm f/4 ED SDM WR

Despite its compact, lightweight design weighing approximately 819 grams, this zoom lens covers the image circle of 35mm full-frame digital SLRs, and provides a focal length range of 70mm to 210mm to facilitate handheld outdoor photography. When mounted on an APS-C-format camera, its focal length range is extended to the equivalent of 107mm to 322mm in the 35mm format. Coupled with its compact, lightweight body, it can be easily integrated in any APS-C-format camera system. In its 20-element, 14-group optics, it incorporates three ED (Extra-low Dispersion) glass elements and two anomalous dispersion glass elements to deliver high-contrast, high-resolution images with edge-to-edge sharpness, while effectively compensating for distortion and chromatic and coma aberrations. In addition to a short minimum focusing distance of 0.95 meters, the lens barrel was designed to be extension-free during AF operation to keep the overall dimensions intact. This allows the photographer to enjoy active field photography in a wide range of outdoor applications, including scenic photography, townscape shooting utilising a beautiful bokeh (defocus) effect in the fore- and background, close-up photography of animals and plants, and sports and wildlife photography where its outstanding portability really comes in handy.