To take a picture:

The green square(s) indicate that the camera has focused.
Place two fingers on the screen and spread them apart to zoom in (a zoom bar indicates the zoom level) and pinch in to zoom back out.

Tap the Capture button
, if available. You can also press either of the Volume Buttons. Otherwise, tap the subject to take the picture. Your picture will be automatically saved to the Gallery.

NOTE	The captured image retains the orientation in which it was taken. If you hold the phone both vertically and horizontally to take pictures, you'll need to rotate the phone to view full screen images in the Gallery app.

TIP
While viewing a photo, you can tap the Menu icon , tap Rotate, then tap Rotate left (or Rotate right) to manually change its orientation.