How to Use an External Camera with Photo Booth

Disconnect your external camera if it's already connected to your Mac. If your webcam came with any driver software on a disk or from a website, install it before proceeding. Open Photo Booth and then reconnect your external camera.
Click Photo Booth's Camera option on the menu bar and select your external camera's name to display its video feed in the main program window.
Click the 'Effects' button if you want to select an effect before you snap a picture or record a video in Photo Booth. The video pane will display nine thumbnails showing your webcam feed with different effects applied, including distortion effects, color effects, customized backgrounds and animated items. Click the right-arrow button on the screen to view additional pages of effects. After you find the effect you want to apply, click it to return to the full-size video stream.
Click one of the three square icons near the bottom left corner of the video preview. Click the first icon to make a series of four consecutive images, the second icon to take a single picture or the third icon to record a video.
Click the red camera icon to automatically take one or four pictures, or to start recording a video. If you are recording a video, click the red camera icon again after you finish recording.
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