Canon IMAGE FORMULA DR-6010C, User Manual

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Chapter 7 ISIS/TWAIN Driver Settings
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You can also move the gamma curve by dragging it with the mouse.
[Freehand]
The output value for a particular input value in the gamma table can be specified with the mouse.
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Click any point in the Gamma Curve Graph to set that point as an output value.
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Drag the mouse on the Gamma Curve Graph to set the output value according to the mouse
movement.
[Import] Button
Clicking this button loads gamma table data (*.png file) that was previously stored with the [Export]
button.
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Imported gamma data is reflected in the Gamma Curve Graph.
[Export] Button
Clicking this button exports the custom gamma curve settings as a gamma table file (*.pxg.)