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Black Control Point and three entry
boxes in the Black Point dialog, repre-
senting the red, green, and blue values
of the black point.
Hide
The Hide option completely removes
the effect of the Black Control Point
temporarily. This option is helpful in
order to compare the before and after
effects of the Black Control Point on
your image. You can quickly access the
Hide option by right-clicking (Windows)
or control-clicking (Mac OS) on the
Black Control Point and selecting Hide.
Each step may contain up to one Black
and one White Control Point, while
allowing for an unlimited number of
Neutral Control Points.
White Control Point...
The White Control Point enables you
to place a Control Point directly on
your image and to cause the targeted
object not only to become white, but
also to neutralize the light tones of
your image. The White Control Point is
not accessible while working within the
Browser.
White points are normally set on what
should be the lightest point of the
image and are used to set one end
of the dynamic range of the image.
The Double-Threshold function within
the Photo Info's Histogram section is
designed specifically to help you locate
the darkest and lightest sections of
your image.
Please see page 100
for more information on how to use
the Double-Threshold function. A White
Control Point is often used in conjunc-
tion with a Black Control Point.
After you place a White Control Point
on your image a White Point dialog box
appears next to the Edit List. The White
Control Point can be repositioned by
clicking and dragging on it. It can be
deleted by selecting the control point
and pressing the Delete key on your
keyboard, and it can be modified by
using the Control Point's slider.
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