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Sigma Corporation has added another digital SLR lens to their stable of products with the launch of 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 and lightweight construction of 76.3mm (3.0-inch) in diameter, 132.6mm (5.2-inch) in length and weighing just 780g (27.5oz) (Nikon Mount).
The lens is said to incorporate the very latest optical technology that helps give optimum performance and providing correction for flare, ghosting and all types of aberrations. High image quality is said to be assured throughout the entire zoom range. Four SLD(Special Low Dispersion)glass elements are used for utmost correction of chromatic aberrations. The HSM (Hyper Sonic Motor) system offers quiet and high-speed auto focusing with full time manual focus override.
The addition of the 1.4x EX DG APO or 2x EX DG APO Tele Converters (optional extras) produces a 70-210mm F4 AF tele-zoom lens and a 100-300mm F5.6 AF ultra-telephoto zoom lens, respectively.
The new lens fits Canon, Nikon, and Sigma lens mounts. It has 18 elements in 14 groups, and a nine bladed diaphragm, with an angle of view from 27.9° - 9.5° across the zoom range. The new lens will retail for $1050.
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