Epson 600 User Manual page 50

Advanced Scanning
Note:
Only the black curve
can be adjusted for
grayscale images.
Numeric Values Type a numeric value (+ or –) to
Sliders
Apply Tone Curves To Individual Colors
With color images, there are four basic color channels
that make up the full spectrum of color: red, green,
blue, and black. All gradation tone curve adjustments
can be made to the overall image, or to individual color
channels.
When you first access the Gradation Curves dialog box
for a color image, all of the color channels are active.
The anchor turns white, retaining its
current setting. Click it again to
reactivate it (it will turn to black).
adjust the curve. Each field adjusts
an anchor point on the curve.
Adjust the sliding controls below the
curve. See How To Use the Tone
Curve Sliders for information on
adjusting the image with these
sliders.
Page 43