Sigma Telephoto 100-300mm f/4 EX APO DG IF HSM AF Lens for Canon EOS

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The Sigma 100-300mm f/4 EX DG IF HSM telephoto zoom lens provides a large constant f/4 maximum aperture at all focal lengths. The use of Apochromatic design and 4 SLD ( Special Low Dispersion ) glass elements give full correction of chromatic aberration and provide a high level of optical performance. The AF drive for the Nikon mount is equipped with the silent, responsive and high-speed H yper S onic M otor and provides full-time manual focus override. A removable tripod mount is provided with