The Sigma 70-200mm f/2.8 APO EX DG OS HSM is a large aperture telephoto zoom lens which features a Hyper Sonic Motor (HSM) and an Optical Stabilizer (OS) . Two FLD glass elements (with performance equal to Fluorite) and 3 SLD elements (Special Low Dispersion) ensure outstanding image quality. An OS system compensates for camera shake when shooting handheld and a rounded 9 blade diaphragm creates beautiful bokeh.
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