Hey I'm having the same issues described...it's been very frustrating having the camera constantly adjust its focus.
As mentioned, more light does help the issue, but this also makes me look like the pale computer nerd that I am! Does anyone else find it ridiculous that you cant force the webcam into an manual focus mode??
Would that not solve this problem entirely? Set the thing up on your desk, adjust the focus ring and then leave it...easy right?
@Fujifilm, can we get a firmware update that disables the autofocus please???