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3 Choose File > Color Settings > Separation
Tables.
4 Click Save. Navigate to the location you want
and type a name for your new separation table.
Then click OK.
To load a saved separation table:
1 Choose File > Color Settings > Separation
Tables.
2 Click Load.
3 Select the table you want to use from the Direc-tory
dialog box, and click OK.
In the Separation Tables dialog box, the Use Table
option is selected, and the name of the table
appears in the option.
4 Click OK to use the table in the CMYK
conversion. The table settings will be used the next
time you convert an image to CMYK.
Loading a separation table overrides any options
you may have changed in the Printing Inks Setup
or Separation Setup dialog boxes. To use the dialog
box settings again, you must choose File > Color
Settings > Separation Tables and select the Use
Separation Setup option (in the To CMYK sec-tion)
or the Use Printing Inks Setup (in the From
CMYK section) or both.
Note: You can use Efi color tables to separate an
image in Photoshop. (Note that this is not the same
as the Efi color database in Cachet or QuarkXPress ®
3.3.) If you use EfiColor for Photoshop separation
tables, you can save TIFF and EPS Adobe Photoshop
files with metric color tags for use with QuarkXPress
3.3. To save a file with metric color tags, choose
File > Preferences > Saving Files, and then select
Save Metric Color Tags.
Building separation tables using printer
profiles
The Apple ColorSync ® Manager (Macintosh) or
Kodak ICC Color Management (Windows) mod-ules
let you build separation tables based on the
profiles of various color printers. When you build
separation tables in this way, Photoshop does not
use the Separation Setup and Printing Inks Setup
dialog boxes when converting to and from CMYK
mode; instead, the program uses the separation
and printing ink information provided by the cho-sen
printer profile.
CHAPTER 5 102
Reproducing Color
The color management modules map the colors in
the Photoshop image to the color gamut, or range
of printable colors, of the profiled printer. You can
choose the method (called rendering intent) that is
used to translate the colors to the printed gamut.
To build color separation tables using printer profiles:
1 Choose File > Color Settings > Separation
Tables.
2 Click Build Tables Using Apple Color Sync
(Macintosh) or Build Tables Using ICC Profiles
(Windows).
Important: For the Macintosh, Apple ColorSync
must be installed in order to see the Build Tables
option in the Separation Tables dialog box. For
instructions about how to install the Apple
ColorSync software, see the Photoshop 4.0 Read Me
file.
3 For Profile, choose the printer profile you want
to use. If the printer you use is not listed in the
Profile menu, contact your printer manufacturer
for the appropriate printer profile.
4 For Render Intent, choose one of the following
options: Default to use the default rendering intent of the
chosen profile. Perceptual to maintain the relative color values
among the original pixels as they are mapped to
the printer gamut. This method preserves the rela-tionship
between colors, although the color values
themselves may change. Saturation to maintain the relative saturation
values of the original pixels. Out-of-gamut colors
are converted to colors that have the same satura-tion
but fall just inside the gamut. Relative Colorimetric to leave colors that fall
inside the gamut unchanged. This method usually
converts out-of-gamut colors to colors that have
the same lightness but fall just inside the gamut.
5 Click Build.
Ensuring consistent color
on-screen
In addition to using Photoshop’s calibration tools
to ensure consistent color between on-screen and
printed output, you can use the same tools to help
ensure consistent color between different software
programs or between similar monitors in similar
conditions.
Calibrating for on-screen presentation
If you are using Photoshop to prepare files that will
be used with other graphics applications and
viewed on-screen (not separated and printed), you
may need to take steps to ensure consistent color
between Photoshop and other graphics programs.
You can achieve this by adjusting Photoshop’s rep-resentation
of the four process colors (cyan,
magenta, yellow, and black).
103
To ensure consistent color between Photoshop and
another software program:
1 In the graphics application, create a new file and
draw 7 boxes. Fill the boxes as shown below.
2 With this window open, start Photoshop. Don’t
open any files.
3 Choose File > Color Settings > Printing Inks
Setup. For Ink Colors, choose Custom.
4 Align this dialog as close as possible to the
graphics application window so you can compare
colors.
5 Click on the Cyan box in the Photoshop dialog
to display the color picker. Adjust the color to
match Box 1 in the graphics application window.
Click OK. Repeat step 5 for each of the 7 color
boxes.
6 In Printing Inks Setup dialog box, click Save.
Name your custom ink setup file and click OK.
1 23
5 67
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C: 100%
C: 100%
Y: 100%
C: 100%
M: 100%
C: 100%
M: 100%
Y: 100%
M: 100% Y: 100% M: 100%
Y: 100%
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