Advanced Scanning
25% 50% 75%
All Midtones
To access the Global Color Correction dialog box, click the color balance button 
.
A range of colors can be represented in a color wheel. The color wheel in this dialog box is composed of the three primary colors, red, green, and blue (RGB), and their complementary colors, cyan, magenta, and yellow (CMY).
To adjust a color, increase or decrease the amount of its complementary color. For example, if you have an image with too much green, you can reduce the green by increasing its complementary color, magenta.
(Magenta is opposite green on the color wheel and color sliders.)
Select Tone Ranges
Across the top of this dialog box is a series of buttons that enable you to specify the midtone range you want to edit on your image.
You can select all ranges, or you can choose one or more midtone ranges.
Page 49