Graphics Programs Reference
In-Depth Information
O
Use the eye dropper
tool and press the
Shift key to deter-
mineexactRGB
and CMYK values
of specific areas of
the image. the color
values can be viewed
in the info panel and
used as a guide for
correction.
Sample in image to set black point
Sample in image to set gray point
Sample in image to set white point
FIGURe 15.16
Sampling black, gray, and
white points with Curves
O
You can also dimin-
ish or remove an
unwanted color
cast by using the
sampling tool in
hue and Saturation
then desaturating
that specific color
by moving the
Saturation slider
to the left.
FIGURe 15.17
Color-corrected photo
Creating a Color Cast with the Photo Filter
Photo Filter is not a filter but an adjustment (and adjustment layer) that allows
you to introduce a digital color cast, which works much like a color filter
