Canon rf 16mm f 2 8 stm vs ttartisan 10mm f 2 asph?

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From Canon RF 16mm f/2.8 STM: Canon RF 16mm f/2.8 STM: A prime lens by Canon for Full frame cameras, 16mm f/2.8. Specs - Maker: Canon - Focal length: 16mm (prime) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Canon RF - Stabilised: no - Autofocus: yes What it frames like - On full frame (Canon RF): as marked, 16mm. - On APS-C (Canon) (Canon RF): like 26mm on full frame; f/2.8 gives about the depth of ...

From TTArtisan 10mm f/2 ASPH: TTArtisan 10mm f/2 ASPH: A prime lens by TTArtisan for APS-C cameras, 10mm f/2. Specs - Maker: TTArtisan - Focal length: 10mm (prime) - Maximum aperture: f/2 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Nikon Z, Canon RF, Micro Four Thirds - Stabilised: no - Autofocus: no, manual focus What it frames like - On APS-C (Sony E, Fujifilm X, Nikon Z): like 15mm on full frame; f/2 gives about ...

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