User Manual

The TWAIN Interface 23
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If the highlight for one of the Red, Green or Blue channels is adjusted then the
results will only affect pixels of that color or containing combinations of that color
(i.e. Yellow contains Green and Blue and would thus also be affected by changes
to one of these channels).
Shadow:
The shadow represents the low (dark) end of the color spectrum. If the shadow
value on the Master channel is raised to 10, all color values between one and ten
will be given the value of zero (black). Thus, raising the shadow darkens the entire
image and raising the shadow in a specific color channels darkens pixels of that
color. Raising the shadow also increases the color contrast of darker tones (the
range between the midtone and the shadow).
Default
Clicking the Default button on the lower right corner
revert the settings to its original
values and discard all adjustments you have made.
·
Tick
ing the
Auto Density
check
box will automatically adjust the
histogram to give high quality images without needing to manually
adjust the settings in the
Histogram
tab
.
·
This feature is not available when
Black & White
is selected as
Scan Mode
.
2.2.2.7
HSL
This tab allows you to adjust the colors in an image.