Sharp AQUOS Crystal - Manual (Page 253)

Camera and Video 244
The camera viewfinder appears.
2. Aim the camera at your subject.
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When you take a picture of people, the camera automatically recognizes the face of your
subject and focuses on it (face detection function).
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To zoom in, swipe the screen right.
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To zoom out, swipe the screen left.
Auto focus activates.
3. Touch .