Sigma 50mm F1.4 DG HSM review: Digital Photography Review

The Sigma 50mm F1.4 DG HSM | Art is a fast 'normal' lens designed for full frame SLRs, and one of the most hotly-anticipated lenses of 2014. Sigma shook up the moribund 'fast 50' sector back in March 2008 when it announced the 50mm F1.4 EX DG HSM, which .

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