Start using your external camera as a webcam in the app. Adjust the camera settings as needed, such as resolution and frame rate.Ħ. In the app, go to the settings or preferences menu and select your external camera as the default camera.ĥ. Open the Windows Camera app or any other app that uses a webcam.Ĥ. Make sure your camera is turned on and set to the correct mode for use as a webcam.ģ. Connect your external camera to your computer using a USB cable.Ģ. To use an external camera as a webcam on Windows 10, follow these steps:ġ.