There are two ways to adjust the focus of an external camera on a desktop computer:
One is the common manual focus, where the outer ring in front of the lens can be rotated to fine-tune the focus.
The other is an autofocus camera, which does not require focus adjustment.
The built-in camera on laptops is fixed focus, and the camera can't be focused unless you use a USB-connected peripheral camera, which can be focused.
You can use the following methods to adjust the computer camera focus to make it clearer:
1, first of all, in the discovery of the computer camera is not clear, first of all, the focus of the camera to adjust, to see whether it is due to the settings of the camera itself to cause unclear phenomenon. Turn the knob on the front of the camera to adjust the focus of the camera.
2, the camera driver is not normal, you can download the driver wizard and other software on the computer's driver to carry out a comprehensive check or update, you can first rotate the camera on the circle, which is used to adjust the focus, adjusted to the appropriate. Then use the settings in the software that comes with it to set the brightness, contrast and some other parameters until you are satisfied.
Expanded:
The way to set the parameters of the computer camera:
1, first open the software PotPlayer, and then as shown in the figure in order to operate: open ---> camera/other devices.
2, then you can see the camera out of the screen image.
3, then you can right-click, select Properties to see the current camera screen resolution.
4, if you are not satisfied with the current resolution, you can set the resolution of the camera to make it output. Operation: Open ---> device settings.
5, and then in the pop-up window, you can set the resolution and encoding format of the camera, it should be noted that the UVC camera is basically able to support the MJPEG format, part of the camera to support H.264 and YUV encoding format.