Ttartisan 50mm f 2 vs zeiss loxia 50mm f 2?

Here is what the site says about that.

From Zeiss Loxia 50mm f/2: Zeiss Loxia 50mm f/2: A prime lens by Zeiss for Full frame cameras, 50mm f/2. Specs - Maker: Zeiss - Focal length: 50mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Sony E - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E): as marked, 50mm. - On APS-C (Sony E): like 75mm on full frame; f/2 gives about the depth ...

From TTArtisan 50mm f/2: TTArtisan 50mm f/2: A prime lens by TTArtisan for Full frame cameras, 50mm f/2. Specs - Maker: TTArtisan - Focal length: 50mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Sony E, Fujifilm X, Nikon Z, Canon RF, L-Mount, Micro Four Thirds - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Nikon Z, Canon RF, L-Mount): as marked, 50mm. ...

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