FStoppers A Review of Sigma's 500mm f/4 DG OS HSM Sports Lens

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Traditionally, the most extreme supertelephoto lenses have mostly remained the purview of first-party manufacturers aside from a few exceptions, but Sigma recently dipped its toes back into the waters with the 500mm f/4 DG OS HSM Sports lens. Can it keep up with Canon and Nikon's variants? This great review will answer that question for you.

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