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Sigma announce the new APO 50-150mm F2.8 EX DC HSM lens. Specially designed for digital SLR cameras with an APS-C size image sensor, this large aperture F2.8 lens has a compact, lightweight construction of 76.3mm (3.0") in diameter, 132.6mm (5.2") in length and weighing just 780g (27.5oz). Four SLD (Special Low Dispersion) glass elements are used for utmost correction of chromatic aberrations. The HSM (Hyper Sonic Motor) system ensures quiet and high-speed auto focusing with full manual focus override...
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