The Sigma 56mm f/1.4 DC DN Contemporary is the latest prime to join Sony’s range of APS-C E-mount lenses. With an equivalent coverage of 84mm in 35mm terms and a very fast 1.4 maximum aperture, it has all the characteristics you’d expect from a portrait lens, making it a very desirable product for Sony users.

Within the Sony E-mount range, there are already quite a few lenses with an equivalent 70-85mm focal length, two of which are the E 50mm f/1.8 OSS (75mm equivalent) and the FE 55mm f/1.8 ZA (82.5mm equivalent). In this comparison, we’re going to be taking a look at how these three primes compare.
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https://mirrorlesscomparison.com/e-mount-lenses/sony-e-50mm-f-1-8-vs-sigma-56mm-f-1-4-vs-sony-fe-55mm-f-1-8/