Is the leica apo summicron m 75mm f 2 asph hard to focus manually?

Here is what the site says about that.

From Leica APO-Summicron-M 75mm f/2 ASPH: Leica APO-Summicron-M 75mm f/2 ASPH: A prime lens by Leica for Full frame cameras, 75mm f/2. Specs - Maker: Leica - Focal length: 75mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Leica M - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Leica M): as marked, 75mm. Cameras it fits - Leica M9: Full frame - Leica M9-P: Full frame - [Leica ...

From Leica APO-Summicron-SL 75mm f/2 ASPH: Leica APO-Summicron-SL 75mm f/2 ASPH: A prime lens by Leica for Full frame cameras, 75mm f/2.

Quoted from this site's pages.