Ttartisan af 14mm f 3 5 vs viltrox af 20mm f 2 8 air?

Here is what the site says about that.

From Viltrox AF 20mm f/2.8 Air: Viltrox AF 20mm f/2.8 Air: A prime lens by Viltrox for Full frame cameras, 20mm f/2.8. Specs - Maker: Viltrox - Focal length: 20mm (prime) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z, L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E, Nikon Z, L-Mount): as marked, 20mm. - On APS-C (Sony E, Nikon Z, L-Mount): like 30mm on ...

From TTArtisan AF 14mm f/3.5: TTArtisan AF 14mm f/3.5: A prime lens by TTArtisan for APS-C cameras, 14mm f/3.5. Specs - Maker: TTArtisan - Focal length: 14mm (prime) - Maximum aperture: f/3.5 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony E, Fujifilm X): like 21mm on full frame; f/3.5 gives about the depth of field of f/5.2 there. - On the larger-sensor ...

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