2-24
Scanning Basics
Tone Curve Name list
Use this list box to select a preset tone curve. There are six preset
tone curves available as shown below, and you can add your own
curves to the list using the procedure in the next section, “Saving
your own tone curve” on page 2-26.
Tone Correction dialog box
Curve
Name
Highlight
1/4
Tone
Midtone
3/4
Tone
Shadow
Description
Linear
245
192
128
64
8
Default
curve
Lighten
245
193
133
74
4
Lightens dark
image
Darken
245
152
82
38
11
Darkens
bright image
Flat
Contrast
245
182
129
72
2
Reduces
contrast
High
Contrast
245
204
129
51
2
Increases
contrast
Summary of Contents for 1640SU - Perfection Photo Scanner
Page 2: ... 2 ...
Page 44: ...2 20 Scanning Basics High Contrast Increases the contrast of dull images Open Shadow ...
Page 54: ...2 30 Scanning Basics ...
Page 98: ...4 10 Calibrating Your System ...
Page 114: ...5 16 Options Paper support Spare paper path guide ADF Document Mat ...
Page 130: ...5 32 Options ...
Page 172: ...6 42 Maintenance and Troubleshooting ...
Page 185: ...Contacting Customer Support B 1 Appendix B Contacting Customer Support Overview B 2 ...
Page 192: ... 6 Glossary ...