Is the ttartisan 50mm f 0 95 hard to focus manually?

Here is what the site says about that.

From TTArtisan 50mm f/0.95: TTArtisan 50mm f/0.95: A prime lens by TTArtisan for APS-C cameras, 50mm f/0.9. Specs - Maker: TTArtisan - Focal length: 50mm (prime) - Maximum aperture: f/0.9 - Made for: APS-C 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 APS-C (Sony E, Fujifilm X, Nikon Z, L-Mount): like 75mm on full frame; f/0.9 ...

From TTArtisan M 50mm f/0.95 ASPH: TTArtisan M 50mm f/0.95 ASPH: A prime lens by TTArtisan for Full frame cameras, 50mm f/0.9.

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