How to adjust contrast curves to adjust the contrast of RGB, Grayscale and CMYK independently.
Contrast curve adjustment
Where: Channel | Color & Contrast | Contrast Curves tabs
On these tabs you may manually adjust contrast curves for Grayscale, RGB and CMYK images.
Note that the Administration Console has separate tabs for application of curves before and after application of Color Management, located on two different tabs under the Color & Contrast node in the Color Factory Configuration program.
When clicking Edit, you may choose the channel to adjust and click and drag the curve using the mouse. You may also load or save Photoshop curves (*.amp, *.acv) directly from the curve edit window. Note that RGB curves has an absolute black value in the lower-left corner of the diagram, while CMYK and grayscale images have an absolute black value in the upper-right corner (similar to Photoshop).
When processing, the individual color curves are applied first, then the master curve.