LG -H788TR User Manual page 167

Super Zooming
When using the rear camera lens, you can zoom in or out to 4x.
NOTE: Use a steady hand. This feature does not work with some functions
Objects may be overlapped when taking a picture of fast-moving subjects.
Live Zoom
Live Zoom allows you to zoom in or out on a portion of a video that is being played to
make the desired section appear larger or smaller.
When viewing a video, use your index finger and thumb in a pinching or spreading
motion to zoom in or out.
NOTE: Do not press too hard; the touch screen is sensitive enough to pick
up a light, but firm touch.
Camera and Video
57