User Manual

The TWAIN Interface 21
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2.2.2.5
Gamma
Image Gamma is used to adjust the colors in the image that will be scanned into
the computer.
Gamma values follow a smooth curve.
By adjusting the gamma, you
can change the tonal range of the selected color channel.
Gamma values are
primarily a measure of the brightness of a color. The larger the gamma value, the
brighter the color becomes.
To adjust the image gamma:
1.
Select the
channel
.
2.
Slide the thumb of
the scroll bar to the right or left
, or c
lick the arrow signs on
the right and left ends.
The current value is shown to right of the scroll bar.
Gamma
Adjusting the gamma on the Master channel affects the tonal range for all colors
equally.
Adjusting the gamma for the individual Red, Green or Blue channels only affects
pixels containing that color.
Default