Canon CS-S 4.3 - Manual (Page 40)

CONTENTS
GLOSSARY
INDEX
40
40
Chapter 3
Scanning
Using Predefined Tone Curves
The Preset adjustments let you select an image correction by selecting the
problem with the image and letting ScanGear CS-S correct it with settings
that are designed to solve the most common problems with images:
overexposure, underexposure, or too high or too low a contrast.
To correct an image problem using predefined tone curves:
1. Click the Tone tab, then click the Custom Curve button.
2. To adjust the tone of a particular color (red, green, or blue), select the
color from the Channel list. Otherwise, leave the channel set to Master.
3. To have ScanGear CS-S automatically compensate for common problems
in an image, choose one of the following from the list:
• No correction
• Fix an image that is underexposed
• Fix an image that is overexposed
• Fix an image that is low contrast
• Fix an image automatically
• Edit custom curve
The preview image reflects the correction.
About the Curve Box
The Auto-curve button sets the curves to the automatic settings that best
display the current preview image. You can use the automatic curves as a
starting point, before editing a curve. You can then choose a channel to edit.
Using Custom Tone Curves
If you want to experiment with tones, try using the Custom Tone Curves.
In the graph window, the x-axis represents the input image, and the
y-axis represents the output.