The key is a filter that sits in front of the projector to block vertical regions of the screen, meaning that each one of your eyes sees a slightly different picture based on the angle at which it views the screen.
Whether shooting videos overhead at a concert or inverting the screen to capture a creative self-portrait, the vari-angle LCD of the P7700 provides users the ability to rotate the screen to adapt to any shooting scenario.
The most prominent feature of this new model is its Sidekick-like form factor, although the U140 eschews the swivel screen for one that slides up to a 30-degree angle at the touch of a button -- all the better to watch programs from its integrated satellite DMB receiver (complete with TV-OUT).