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The Sigma 500mm f/4 DG OS HSM Sports is a hyper-telephoto prime lens for full-frame DSLR cameras, and APS-C sensor cameras with an effective increase in the focal length..

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A Guide to Color and Conversion Rates

The Sigma 500mm f/4 DG OS HSM Sports is a hyper-telephoto prime lens for full-frame DSLR cameras, and APS-C sensor cameras with an effective increase in the focal length..

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