Is the ttartisan 50mm f 2 sharp wide open?

Here is what the site says about that.

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. ...

From Leica Summilux-M 50mm f/1.4: Leica Summilux-M 50mm f/1.4: A prime lens by Leica for Full frame cameras, 50mm f/1.4. A 2025 remake of the 1959 Summilux, softer wide open than the ASPH version.

Quoted from this site's pages.