7artisans 14mm f 2 8 vs viltrox af 9mm f 2 8 air?

Here is what the site says about that.

From Viltrox AF 9mm f/2.8 Air: Viltrox AF 9mm f/2.8 Air: A prime lens by Viltrox for APS-C cameras, 9mm f/2.8. A tiny autofocus ultra-wide for APS-C. Specs - Maker: Viltrox - Focal length: 9mm (prime) - Maximum aperture: f/2.8 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Nikon Z - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony E, Fujifilm X, Nikon Z): like 14mm on full frame; f/2.8 gives about the ...

From 7Artisans 14mm f/2.8: 7Artisans 14mm f/2.8: A prime lens by 7Artisans for Full frame cameras, 14mm f/2.8. Specs - Maker: 7Artisans - Focal length: 14mm (prime) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z, Canon RF, L-Mount - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Nikon Z, Canon RF, L-Mount): as marked, 14mm. - On APS-C (Sony E, ...

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