Sigma 50-150mm F2.8 EX DC APO OS HSM has smaller design than the design in full frame 70-200mm F2.8. And, this Sigma lens also has stabilization system. Sigma 50-150mm is composed of six lens elements, which has Hyper Sonic Motor (HSM) feature for focus quick search.
Sigma 50-150mm F2.8 EX DC APO OS HSM has minimum focusing distance of 80cm with maximum magnification ratio 1:6.3 and can use Sigma Tele Converter EX DG APO 1.4x or 2x EX DG APO that would result in a distance of 70-201mm F4 AF or 100-300mm F5.6 AF.
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