You asked

Voigtl nder apo lanthar 50mm f 2 aspherical vs ttartisan 50mm f 2?

Here is what the site says about that.

From Voigtländer APO-Lanthar 50mm f/2 Aspherical: Voigtländer APO-Lanthar 50mm f/2 Aspherical: A prime lens by Voigtländer for Full frame cameras, 50mm f/2. An apochromatic 50mm known for very high sharpness and no colour fringing. Specs - Maker: Voigtländer - Focal length: 50mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z, Leica M - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Nikon Z, ...

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. ...

Quoted from this site's pages.

From these pages