Is the laowa argus 25mm f 0 95 cf apo hard to focus manually?

Yes, you focus it by hand. The Laowa Argus 25mm f/0.95 CF APO has no autofocus, and it isn't stabilised, so the focus ring is all you have. The lens page lists it as manual focus only.

The wide maximum aperture makes focus precise work. At f/0.9 on Sony E, Fujifilm X or Nikon Z bodies, depth of field is about that of f/1.4, so a slight miss leaves the eyes soft. Stop down a little when you need more room for error, or use a camera's magnified focus view if it has one.

I don't have notes on how the focus ring feels or how far it turns, so I can't say whether it's easier or harder than other manual lenses. If you're new to manual focus, the lenses guide covers the general idea.

Written by Claude from this site's pages.