Manual Focus Controls Logitech C920 On

I use „Logitech HD Pro Webcam C920“ with latest version of „Logitech Webcam Software“. I have problem with manual focus. I switched Auto Focus to Manual Focus in Settings. This change changed. I went out and bought another c920 thinking the issue may be the camera. After hooking up the new one, I was faced with the same problem. I could not get it to focus. I had the logitech software open altering the manual controls when I accidentally rolled my mouse wheel while the cursor happened to be over the focus slider. If you are using the popular Logitech C920 webcam (and possibly other recent Logitech webcams like the Brio or StreamCam), there are two solutions. For just simple controls like zoom, you can use the Logitech Camera Settings app that I describe in this article and video. Logitech HD PRO C920 Webcam test with Little Square Mic (LSM) from Studio Projects in manual mode. MANUAL FOCUS on sh. View and download the Manual of Logitech C920 HD Pro Webcam (page 1 of 28) (English). Also support or get the manual by email.

Manual Focus Controls Logitech C920 On
Hello!
I'm trying to make two scenes, one with my Logitech C920 set to 35 and the other with it set to a manual focus of 140. I made sure each source was separate, but when I change the setting in one scene, it also changes it in the other. It seems that the webcam settings are global.
Is there any way to toggle the focus between two values without having to go into the webcam settings? I need to be able to do it on command when I am holding something up to the camera because the auto focus does not work fast enough (and I know the settings I want).

Manual Focus Controls Logitech C920 Once

I make a bunch of video with a Logitech c920, and I have problems with the autofocus because I occasionally want to focus the camera on something other than my face, for example if I have objects on a desk in front of me. But the problem is that I have trouble getting the c920 to lock onto objects with the autofocus.
On something like a cellphone, I'd just tap the thing to make it focus on an arbitrary point. But I can't figure out how to do this with the c920. I've read through the documentation, etc. I also tried doing this with Logitech's camera control software, but I'm having problems because using the controller software doesn't work while OBS is running. Doing this through OBS directly is not a great solution, either, because the manual camera control is very awkward to use while shooting video. It's not a great answer. I don't have anybody to help me shoot this video, so having somebody else manually focus is not an option, either.
Does anybody know, is there some kind of middleware that I can use to more precisely control the c920, then feed that video to OBS?