Microtek 1000xl Reference Manual

White & Black Points tool

The White & Black Points tool is used to change the shadow and highlight points
of an image. (See note on next page for additional descriptions.)

By using this tool, you can manipulate an image to either bring out the highlights
in a very dark image, or bring out more of the shadows in a very light image.

The White & Black Points tool can also be used to neutralize the color cast in
the highlight and shadow regions.

Observe
histogram values
for distribution of
the Lightness "L"
channel in the
image, as cursor
is swept around
histogram

Check to auto
neutralize unwanted
color casts in
Shadow (black) area
or Highlight (white)
area

Enter custom Lightness, Chroma  &
Hue values for Highlight (White area)
here. C & H values are applicable
only when the 

Auto Neutralize  -

Highlight check box is enabled.

Enter custom Lightness,

Chroma  & Hue values for

Shadow (Black area) here.

C & H values are applicable

only when the 

Auto

Neutralize  -  Shadow
check box is enabled.

Drag sliders to

define custom

shadow and

highlight

settings

Click to let ScanWizard
Pro determine the
shadow and highlight
points automatically

Click to bring up the
White/Black points
setup dialog box. For
more details, see the
section titled 

White &

Black Points Setup
(under the
Preferences menu in
the Preview
window).