Disable webcam's Autofocus in Linux

Question

I'm working in embebed system in the beagleboard. The source code is in Python, but I import libraries from OpenCV to do image processing. Actually, I'm using the webcam Logitech c910, it's a excellent camera but it has autofocus. I would like to know if I can disable the autofocus from Python or any program in Linux?

Accepted Answer

Use program `v4l2-ctl` from your shell to control hardware settings on your webcam. To turn off autofocus just do:

```
v4l2-ctl -c focus_auto=0
```

You can list all possible controls with:

```
v4l2-ctl -l
```

The commands default to your first Video4Linux device, i.e. `/dev/video0`. If you got more than one webcam plugged in, use `-d` switch to select your target device.

Installing v4l-utils

Easiest way to install the utility is using your package manager, e.g. on Ubuntu or other Debian-based systems try:

```
apt-get install v4l-utils
```

or on Fedora, CentOS and other RPM-based distros use:

```
yum install v4l-utils
```

Disable webcam's Autofocus in Linux

Solution

Problem