LG LM-V500EM User Manual page 689

Using Triple Preview
You can simultaneously view three previews of the rear camera on the
dual screen.
1
Camera.
Tap
2
Tap on the top part of the camera screen.
• The Triple Preview appear on the dual screen.
• When you select the desired image from the Triple Preview screen, you
can see it on the main screen.
LG Dual Screen (LM-V505N)
223