Audio Spectrum Analyzer
Vectorscope And Waveform Monitor
The Vectorscope and Waveform Monitor show how much color and brightness is being recorded on each frame. They are updated in real-time, and the patterns can be mesmerizing if you stare at them for too long.
The Vectorscope provides a summary of colors on the frame. For example, if you point the camcorder at a red picture, then the lines will creep into the red (R) triangle. For professionals, the vectorscope is much more accurate than the old human eyeball.
The Waveform Monitor is primarily used to measure the brightness of the incoming video frames. It displays brightness as a graph from left to right, much like a photograph's brightness histogram (for the Photoshop people out there). You can accurately see if you have bright or dark areas, rather than guesstimating with your eyes.