From the home screen, press the Camera/Speaker button.
Note: Alternately, you can access the Camera app from the apps tray. From the home screen, press the Select button > press the navigational button to highlight the Multimedia app > press the Select button > press the Select button.
Press the up button to zoom in. Press the down button to zoom out.
Press the Select button to take a picture.
From the Camera screen, press the left option button to record a video. Press the Select button to stop the recording.