Lighten Or Darken An Overall Image - Xante Accel-a-Graphix CT4 User Manual

Lighten or Darken an Overall Image

If you want to lighten an overall page image, increase the gamma
curve on all four colors by the same value. You can do this using
Photoshop's Adjust Curves feature to lighten the midtones of these
curves.
Fig. 8.34 Increase the Gamma Curve
If you want to darken the overall page image, decrease all four colors
by the same value. This change has the same effect for both RGB
and CMYK images.
Fig. 8.35 Decrease the Gamma Curve:
___________________________________ Color Management 8-39