7artisans 7 5mm f 2 8 fisheye ii vs canon rf s 7 8mm f 4 stm dual?

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From Canon RF-S 7.8mm f/4 STM Dual: Canon RF-S 7.8mm f/4 STM Dual: A prime lens by Canon for APS-C cameras, 7.8mm f/4. A twin lens for recording spatial video, made for the R7. Specs - Maker: Canon - Focal length: 7.8mm (prime) - Maximum aperture: f/4 - Made for: APS-C sensors - Mounts: Canon RF - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Canon) (Canon RF): like 12mm on full frame; f/4 gives about the depth of ...

From 7Artisans 7.5mm f/2.8 Fisheye II: 7Artisans 7.5mm f/2.8 Fisheye II: A prime lens by 7Artisans for APS-C cameras, 7.5mm f/2.8. Specs - Maker: 7Artisans - Focal length: 7.5mm (prime) - Maximum aperture: f/2.8 - 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 11mm on full frame; f/2.8 gives about ...

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