Canon DR-2010C ユーザーズマニュアル

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In the ISIS/TWAIN driver properties dialog box, click the [Brightness] tab 
→ click [Gamma].

Select the [Custom] check box in the [Gamma Settings] dialog box 

→ 

specify the settings as necessary.

The settings you can specify are as follows:

Select
Select the side and color for the custom setting.

y The color bar and color of the sample image are changed to show the 

specified color.

Input method
Select the setting method for gamma correction.

[Factor]
Move the slider to the left or right to adjust the gamma correction factor 
between 0.2 and 5.0.

y The gamma correction value, Gamma Curve Graph, and sample image color 

are interlinked.

y Clicking a point in the Gamma Curve Graph with your mouse changes the 

gamma curve and color of the sample image to match that point.

y 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.

y Click any point in the Gamma Curve Graph to set that point as an output 

value.

y Drag the mouse on the Gamma Curve Graph to set the output value 

according to the mouse movement.

[Import]
Clicking this button loads gamma table data (*.png file) that was previously 
stored with the [Export] button.

y Imported gamma data is reflected in the Gamma Curve Graph.

[Export]
Clicking this button exports the custom gamma curve settings as a gamma 
table file (*.pxg.)

When the [Custom] check box in the [Gamma Settings] dialog box is selected, all 
settings on the [Brightness] tab sheet are set automatically.