Panasonic lumix s 20mm f 2 5 vs sigma 20mm f 2 dg contemporary?

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From Panasonic Lumix S 20mm f/2.5: Panasonic Lumix S 20mm f/2.5: A prime lens by Panasonic for Full frame cameras, 20mm f/2.5. A small, light wide prime made to match the S9. Specs - Maker: Panasonic - Focal length: 20mm (prime) - Maximum aperture: f/2.5 - Made for: Full frame sensors - Mounts: L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (L-Mount): as marked, 20mm. - On APS-C (L-Mount): like 30mm on full frame; ...

From Sigma 20mm f/2 DG Contemporary: Sigma 20mm f/2 DG Contemporary: A prime lens by Sigma for Full frame cameras, 20mm f/2. A small metal ultra-wide from the I series; sold as the 20mm f/2 DG DN Contemporary before 2025. Specs - Maker: Sigma - Focal length: 20mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Sony E, L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E, L-Mount): ...

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