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HP PrecisionScan Pro User’s Guide 78
Adjusting images of
pictures
Book Contents Index
➮
➮
Setting pixel output levels
The Output Levels control in the Exposure
Adjustment
tool lets you create interesting effects
for images of pictures.
When you change the
White output level value to 0
and the
Black output level value to 255, the colors
in the image reverse.
Changing output levels
Use the Output Levels control in the Exposure
Adjustment
tool to create interesting effects in
images of pictures.
The ranges for the numbers in the
White and Black
fields are set in the
Preference Controls tab (see
page
47).
1 Click the Output Levels checkbox in the Exposure
Adjustment
tool to select it.
The
White and Black output levels controls
appear in the
Exposure Adjustment tool.
2 Click on the one side of a slider,
– or –
type a different number in the
White or Black
field, then press Tab or Enter,
– or –
click the UP or the DOWN spin button next to the
White or Black field.
The result of the changes to
Output Levels can be
seen in the preview area.
Appearance with
White control = 255
Black control = 0
Appearance with
White control = 0
Black control = 255