Canon ScanGear CS-S 4.3 User Manual page 37

CONTENTS
GLOSSARY
INDEX
Change Tone Using the Histogram Tool
The Histogram settings let you adjust the tone shadows for the preview
image.
Using the eyedroppers, you can sample the Black-point, Mid-point, and
White-point tones in the preview image and base the image tone settings on
the sampling. Using the corresponding text boxes, you can type a value in the
Black-point, Mid-point, and White-point text boxes.
The default values are:
• Black-point: 0
• Mid-point:
• White-point: 255
Under the histogram chart, you can slide the black, gray, and white arrows to
adjust the tones. You cannot edit the histogram directly.
When you find a combination of tone settings you like, you can save the
settings in a file and use it in future scanning sessions.
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Chapter 3
37
Scanning
37