Is the laowa argus 45mm f 0 95 ff hard to focus manually?

Here is what the site says about that.

From Laowa Argus 45mm f/0.95 FF: Laowa Argus 45mm f/0.95 FF: A prime lens by Laowa for Full frame cameras, 45mm f/0.9. Specs - Maker: Laowa - Focal length: 45mm (prime) - Maximum aperture: f/0.9 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z, Canon RF - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Nikon Z, Canon RF): as marked, 45mm. - On APS-C (Sony E, Nikon Z): ...

From Laowa Argus 35mm f/0.95 FF: Laowa Argus 35mm f/0.95 FF: A prime lens by Laowa for Full frame cameras, 35mm f/0.9.

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