Adobe Photoshop CS4 - Manual (Page 463)

456 USING PHOTOSHOP CS4
Saving and exporting images
Last updated 1/10/2010
Color management and PDF/X options for Adobe PDF
You can set the following options in the Output section of the Adobe PDF Options dialog box. Interactions between
Output options change depending on whether Color Management is on or off and which PDF standard is selected.
Color Conversion Specifies how to represent color information in the Adobe PDF file. When you convert color objects
to RGB or CMYK, also select a destination profile from the pop-up menu. All spot color information is preserved
during color conversion; only the process color equivalents convert to the designated color space.
• No Conversion Preserves color data as is.
• Convert To Destination Converts all colors to the profile selected for Destination. Whether the profile is included
or not is determined by the Profile Inclusion Policy.
Destination Describes the gamut of the final RGB or CMYK output device, such as your monitor or a SWOP standard.
Using this profile, Photoshop converts the document’s color information (defined by the source profile in the Working
Spaces section of the Color Settings dialog box) to the color space of the target output device.
Profile Inclusion Policy Determines whether a color profile is included in the file.
Output Intent Profile Name Specifies the characterized printing condition for the document. An output intent profile
is required for creating PDF/X-compliant files. This menu is available only if a PDF/X standard (or preset) is selected
in the Adobe PDF Options dialog box.
Output Condition Describes the intended printing condition. This entry can be useful for the intended receiver of the
PDF document.
Output Condition Identifier A pointer to more information on the intended printing condition. The identifier is
automatically entered for printing conditions that are included in the ICC registry.
Registry Name Indicates the web address for more information on the registry. The URL is automatically entered for
ICC registry names.
Adding security to PDF files
When saving as PDF, you can add password protection and security restrictions, limiting not only who can open the
file, but also who can copy or extract contents, print the document, and more.
A PDF file can require passwords to open a document (document open password) and to change security settings
(permissions password). If you set any security restrictions in your file, you should set both passwords; otherwise,
anyone who opens the file could remove the restrictions. If a file is opened with a permissions password, the security
restrictions are temporarily disabled.
The RC4 method of security from RSA Corporation is used to password-protect PDF files. Depending on the
Compatibility setting (in the General category), the encryption level will be high or low.
Note: Adobe PDF presets don’t support passwords and security settings. If you select passwords and security settings in
the Export Adobe PDF dialog box, and then click Save Preset, the passwords and security settings won’t be preserved.
Save an Adobe PDF preset
Although the default PDF presets are based on best practices, you may discover that your workflow requires
specialized PDF settings that aren’t available using any of the built-in presets. In this case, you can create and save your
own custom presets for reuse in Photoshop or any product in the Adobe Creative Suite.