Canon CanoScan D1250U2F User Manual page 61

Glossary
Contents
Glossary
Index
Crop
The action of selecting part of an image. The Crop button on the ScanGear
CS-U main window lets you select part of a preview image and re-preview
or scan only that selected part.
Curve chart
The graph displayed in the Tone tab settings for the Auto Tone, Contrast/
Brightness, Gamma, Histogram, and Special Tone Curves features. This
graph describes the relationship between the color characteristics of the
previewed image and the available feature settings.
Default
The preset factory settings on hardware or software.
Executive
A standard U.S. paper size measuring 7.25 x 10.5 in (184.2 x 266.7 mm)
Full Platen
The maximum scanning area on the scanner's document glass:
216 x 297 mm (width of U.S. Letter and length of A4 paper sizes).
Gamma Curve
The Gamma Curve lets you change the midtones of colors to increase
the contrast between colors and enhance the overall image. When you
increase the Gamma value, light colors are made lighter, and dark colors
are made darker. The graphed curve represents the relationship between
input and output values for the midtones of the preview image.
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