Apple Color 1.0 - Manual (Page 153)

Chapter 8 Video Scopes 153
The Vectorscope is useful for seeing, at a glance, the hue and intensity of the various
colors in your image. Once you learn to identify the colors in your shots on the graph in
the Vectorscope, you will be better able to match two images closely because you can
see where they vary. For example, if one image is more saturated than another, it’s
graph in the Vectorscope will be larger.
You can also use the Vectorscope to spot whether there’s a color cast affecting portions
of the picture that should be neutral (or desaturated). Since desaturated areas of the
picture should be perfectly centered, an off-center Vectorscope graph representing an
image with portions of white, gray, or black clearly indicates a color imbalance.
The Color Targets
The color targets of the Vectorscope scale match the colors in the Color Balance
controls of the Final Cut Pro color correction filters. If the hues of two shots you’re
trying to match don’t match, the direction and distance of their offset on the
Vectorscope scale give you an indication of which direction to move the balance
control indicator to correct for this.
A less saturated image A more saturated image