Adobe PHOTOSHOP 5.0 User Manual page 123

The eyedropper displays the average value of each
3-by-3-screen-pixel area, ensuring a representative
sample of an area rather than the value of a single
screen-pixel.
Identify the highlight:
3
Open the Info palette, and move the pointer
•
around the image to help identify the lightest
neutral areas in the image. (See "Previewing color
values" on page 107.)
Use Threshold mode in the Levels dialog box to
•
identify the highlight area in the image (see the
procedure for using Threshold mode to identify
the lightest and darkest areas in the image on
page 116).
Open the Curves dialog box and drag the pointer
•
in the image to identify the lightest and darkest
areas. (See "Using the Curves command" on
page 120.)
Open the Levels or Curves dialog box, as
4
described in "Using color adjustment commands"
on page 105.
Double-click the white eyedropper tool to
5
display the color picker. In the color picker, enter
the value that you want to assign to the highlight
you identified in step 3, following these guidelines:
In most situations when you are printing on
•
white paper, you can achieve a good highlight in
an average-key image using CMYK values of 5, 3,
3, and 0, respectively.
The RGB equivalent is 244, 244, 244.
•
The grayscale equivalent is a 4% dot.
•
You can reproduce these target values quickly by
•
entering a value of 96% in the Brightness text box.
Important: If you have changed your monitor or
separation setup values from their defaults, entering
non-CMYK values will generate different values
from those shown in this example. For more infor-
mation on target values for highlights and shadows,
see the color illustration on page 230.
6 Click OK in the Color Picker dialog box when
you've entered the values, and then click the
highlight area that you identified in step 3. If you
accidentally click the wrong highlight, hold down
Alt (Windows) or Option (Mac OS), and click
Reset in the dialog box.
The pixel values throughout the image are
adjusted proportionately to the new highlight
values. Any pixels lighter than the area you clicked
become specular white. The Info palette shows the
values both before and after the color adjustment.
7 Use the Info palette to help identify a represen-
tative shadow area in the image. (Don't click the
area yet.)
8 Double-click the black eyedropper tool in the
Levels or Curves dialog box, and enter a target
shadow value following these guidelines:
Typical when you're printing on white paper.
•
You can achieve a good shadow in an average-key
image using CMYK values of 65, 53, 51, and 95.
ADOBE PHOTOSHOP 5.0 115
User Guide