Sigma 19mm f 2 8 dn art vs sony fe 28mm f 2?

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From Sigma 19mm f/2.8 DN Art: Sigma 19mm f/2.8 DN Art: A prime lens by Sigma for APS-C cameras, 19mm f/2.8. A cheap, light wide prime from 2013, common used. Specs - Maker: Sigma - Focal length: 19mm (prime) - Maximum aperture: f/2.8 - Made for: APS-C sensors - Mounts: Sony E, Micro Four Thirds - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony E): like 28mm on full frame; f/2.8 gives about the depth of ...

From Sony FE 28mm f/2: Sony FE 28mm f/2: A prime lens by Sony for Full frame cameras, 28mm f/2. Specs - Maker: Sony - Focal length: 28mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Sony E - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E): as marked, 28mm. - On APS-C (Sony E): like 42mm on full frame; f/2 gives about the depth of field ...

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