How to set camera focus via API correctly?

Question

API

Hello! There are dahua cameras, you need to set focus on them, but for some reason I can’t, I can set all other settings, but there is no focus.
http:///cgi-bin/devVideoInput.cgi?action=getFocusStatus
http:///cgi-bin/devVideoInput.cgi?action=adjustFoc... - I send such requests, but in response I get an error.

Answer 1

What model? If the lens is not motorized, then it is better to postpone the API and adjust the focus manually