Canon ef 85mm f 1 4l is usm vs sigma 85mm f 1 4 dg hsm art?

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From Canon EF 85mm f/1.4L IS USM: Canon EF 85mm f/1.4L IS USM: A prime lens by Canon for Full frame cameras, 85mm f/1.4. Specs - Maker: Canon - Focal length: 85mm (prime) - Maximum aperture: f/1.4 - Made for: Full frame sensors - Mounts: Canon EF - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Canon EF): as marked, 85mm. - On APS-C (Canon) (Canon EF): like 136mm on full frame; f/1.4 gives about the depth of ...

From Sigma 85mm f/1.4 DG HSM Art: Sigma 85mm f/1.4 DG HSM Art: A prime lens by Sigma for Full frame cameras, 85mm f/1.4. Specs - Maker: Sigma - Focal length: 85mm (prime) - Maximum aperture: f/1.4 - Made for: Full frame sensors - Mounts: Canon EF, Nikon F, Sony E, L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (Canon EF, Nikon F, Sony E, L-Mount): as marked, 85mm. - On APS-C (Nikon F, Sony E, ...

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