Sigma 50-500mm F4.5-6.3 APO DG OS HSM Telephoto Zoom Lens with UV Filter for Pentax 645Z, 645D, K-S1, K-500, K-50, K-30, K5 IIs, K-7, K-5, K-3, K-2, K-X, K20D, K100D, K110D and K10D Digital SLR Camera

Sigma 50-500mm F4.5-6.3 APO DG OS HSM Telephoto Zoom Lens with UV Filter for Pentax 645Z, 645D, K-S1, K-500, K-50, K-30, K5 IIs, K-7, K-5, K-3, K-2, K-X, K20D, K100D, K110D and K10D Digital SLR Camera

Sigma's APO 50-500mm F4.5-6.3 DG OS HSM is an advanced optical design of this 10x power high-performance zoom lens that covers the standard-to-super-telephoto range, now with the added advantage of Sigma's own Optical Stabilization which offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. Sigma is the only one to offer OS for Sony and Pentax mount where the image is stabilized in the viewfinder if chosen. For many photographers, having an "all-in-one" lens is an absolute dream. Especially for nature photographers, the idea of a lens suitable for landscape photography at the short end of the zoom range, while still having enough reach for wildlife is a great option. Add to that, the ability to close focus on small objects in the field such as flowers and it's the perfect backpackers' lens. Four SLD (Special Low Dispersion) glass elements provide optimum color correction & sharpness throughout the entire zoom range and Super Multi-Layer Coating reduces flare and ghosting and assures high image quality throughout the entire zoom range. With no need to change lenses, there is less chance of dirt or moisture entering the camera and fouling the imaging sensor. Opteka has teamed up with Sigma to bundle the perfect needed photo accessories. The Opteka 95mm HD MC Ultraviolet filter was designed with the Sigma 50-500mm in-mind. The UV will reduce ultraviolet light and protect the lens during general photography. Includes E;Sigma 50-500mm F4.5-6.3 APO DG OS HSM E;Opteka HD MC UV filter E;Opteka cap keeper E;47th Street Photo microfiber cleaning cloth E;Sigma lens hood E;Sigma lens caps E;Sigma carrying case E;Sigma 4 year USA warranty (when buying from an authorized dealer)