Sigma 70-200mm f2.8 OS review
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The Sigma 70-200mm f/2.8 EX DG OS HSM is the company’s latest 70-200mm and its first with an image stabilizer. It covers a 2.9x zoom-range and was announced February 2011. Sigma offers this lens with Canon, Nikon, Sony, Pentax and Sigma mounts and it is cheaper than any other stabilized 70-200/2.8 zoom. While primarily designed…
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