Canon CanoScan FB 1200S Printing Guide - Page 43

Using Predefined Tone Curves, About the Curve Box, Using Custom Tone Curves

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CONTENTS GLOSSARY INDEX Chapter 3 Scanning 43 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. 43

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CONTENTS
GLOSSARY
INDEX
43
43
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.