Canon rf 85mm f 1 2l usm ds vs sigma 56mm f 1 4 dc dn contemporary?

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From Canon RF 85mm f/1.2L USM DS: Canon RF 85mm f/1.2L USM DS: A prime lens by Canon for Full frame cameras, 85mm f/1.2. The RF 85mm f/1.2L with a coating that smooths out-of-focus highlights, at the cost of some light. Specs - Maker: Canon - Focal length: 85mm (prime) - Maximum aperture: f/1.2 - Made for: Full frame sensors - Mounts: Canon RF - Stabilised: no - Autofocus: yes What it frames like - On full frame (Canon RF): as marked, 85mm. ...

From Sigma 56mm f/1.4 DC DN Contemporary: Sigma 56mm f/1.4 DC DN Contemporary: A prime lens by Sigma for APS-C cameras, 56mm f/1.4. An 85mm-equivalent portrait lens on APS-C, and a 112mm one on Micro Four Thirds. Specs - Maker: Sigma - Focal length: 56mm (prime) - Maximum aperture: f/1.4 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Micro Four Thirds, L-Mount, Canon RF, Nikon Z - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony ...

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