Matrox Electronic Systems Matrox RT.X2 - Manual (Page 75)

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Creating a primary color correction
want to decrease. For example, if you move the handle towards red, you also
decrease cyan by the same amount, as shown in the following diagram:
¥ Tip For increased precision, hold down the ALT key while you drag the handle.
If you want to reset the color balance ( Hue and Saturation) setting, click the
Reset Color Balance button under the color map you are using.
To adjust the luminance for a tonal range, drag the corresponding luminance
slider under the appropriate color map. For example, if you want to adjust the
MAGENTA RED
YELLOW BLUE
CYAN GREEN
Reset Color
Balance button