Owner's Manual

8-15
Chapter 8 ISIS/TWAIN Driver Settings
• When the [Auto] check box is selected, the slider
automatically selects a brightness level to be used for
automatic adjustment.
Contrast
Adjusts the contrast of images to be scanned.
[Enable Back Side Brightness] Check Box
If the brightness of the front and back of the document
pages is different, select this check box to adjust only the
brightness of the back side.
[Enable Back Side Contrast] Check Box
If the contrast of the front and back of the document pages
is different, select this check box to adjust only the contrast
of the back side.
■ [Gamma Settings] Dialog Box
Use the [Gamma Settings] dialog box to adjust the gamma
correction value.
[Custom] Check Box
Select this check box to set custom gamma correction.
Select
Select the side and color for custom setting.
Hint
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.
Hint
• The gamma correction value, Gamma Curve Graph, and
sample image color are interlinked. When you adjust one of
these items, the others are also adjusted automatically.
• Clicking at a point in the Gamma Curve Graph with your
mouse changes the gamma curve and color of the sample
image to match that point.
• You can also move the gamma curve by dragging it with the
mouse.
[Free hand]
The output value for a particular input value in the gamma
table can be specified with the mouse.