User`s guide

Reference 5-15
White / Black Point Setup
This command provides your with advanced controls for setting the clipping points for your white
and black points, as well as determining the output levels for the white/black points on your printer.
To use this feature:
1. Choose the White/Black Points Setup command from the Preferences menu.
2. As an alternative, you can click this command from the Color Correction Menu. This is also the
same thing as clicking the White/Black points tool in the Settings window and then clicking the
Setup button from the dialog box that comes up. When the dialog box comes up, specify your
preferences.
Auto White / Black Point Clipping
The Auto White Point clipping and Auto Black
Point clipping fields allow you to specify the
percentage by which the white and black points,
respectively, can be clipped from the histogram.
The clipping is done after you click the Auto
button in the White/Black Points dialog box.
For example, if you specify 10 percent as your
White Point clipping value and then click the
Auto button, the white point on the histogram is
adjusted so that 10 percent of the color informa-
tion is "clipped" or ignored. The resulting 90
percent information leftover is then remapped,
resulting in an image with less highlight detail.
The same principle above applies to the Auto
Black Point clipping feature, which governs the
black point for shadows.
These fields are normally used by more ad-
vanced users, and the features are taken care of
automatically if you have set up Color Matching
correctly early on in ScanWizard 5.
Minimum / Maximum Output Level
The Minimum Output Level lets you set the
minimum output level of the black point. The
higher the percentage value, the lower the
contrast will be.
The Maximum Output Level lets you set the
output level of the white point. The lower the
percentage value, the lower the contrast will be.