Canon rf 10 20mm f 4l is stm vs laowa 8 16mm f 3 5 5 zoom cf?

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From Laowa 8-16mm f/3.5-5 Zoom CF: Laowa 8-16mm f/3.5-5 Zoom CF: A zoom lens by Laowa for APS-C cameras, 8-16mm f/3.5-5. Specs - Maker: Laowa - Focal length: 8-16mm (zoom) - Maximum aperture: f/3.5-5 (it gets darker as you zoom in) - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Nikon Z, Canon RF - Stabilised: no - Autofocus: no, manual focus What it frames like - On APS-C (Sony E, Fujifilm X, Nikon Z): like 12-24mm on full ...

From Canon RF 10-20mm f/4L IS STM: Canon RF 10-20mm f/4L IS STM: A zoom lens by Canon for Full frame cameras, 10-20mm f/4. Specs - Maker: Canon - Focal length: 10-20mm (zoom) - Maximum aperture: f/4 - Made for: Full frame sensors - Mounts: Canon RF - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Canon RF): as marked, 10-20mm. - On APS-C (Canon) (Canon RF): like 16-32mm on full frame; f/4 gives about the depth of ...

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