Adobe 62000236 Extended User Guide - Page 436

USING ACROBAT 9 PRO EXTENDED 430 Color management sRGB is recommended when you prepare images for the web, because it defines the color space of the standard monitor used to view images on the web. sRGB is also a good choice when you work with images from consumer-level digital cameras, because most of these cameras use sRGB as their default color space. Adobe RGB is recommended when you prepare documents for print, because Adobe RGB's gamut includes some printable colors (cyans and blues in particular) that can't be defined using sRGB. Adobe RGB is also a good choice when working with images from professional-level digital cameras, because most of these cameras use Adobe RGB as their default color space. CMYK Determines the CMYK color space of the application. All CMYK working spaces are device-dependent, meaning that they are based on actual ink and paper combinations. The CMYK working spaces Adobe supplies are based on standard commercial print conditions. Gray (Photoshop) or Grayscale (Acrobat) Determines the grayscale color space of the application. Spot (Photoshop) Specifies the dot gain to use when displaying spot color channels and duotones. Note: In Acrobat, you can use the color space in an embedded output intent instead of a document color space for viewing and printing. For more information on output intents, see Acrobat Help. Adobe applications ship with a standard set of working space profiles that have been recommended and tested by Adobe Systems for most color management workflows. By default, only these profiles appear in the working space menus. To display additional color profiles that you have installed on your system, select Advanced Mode (Illustrator and InDesign) or More Options (Photoshop). A color profile must be bi-directional (that is, contain specifications for translating both into and out of color spaces) in order to appear in the working space menus. Note: In Photoshop, you can create custom working space profiles. However, Adobe recommends that you use a standard working space profile rather than create a custom profile. For more information, see the Photoshop support knowledgebase at www.adobe.com/support/products/photoshop.html. About missing and mismatched color profiles For a newly created document, the color workflow usually operates seamlessly: Unless specified otherwise, the document uses the working space profile associated with its color mode for creating and editing colors. However, some existing documents may not use the working space profile that you have specified, and some existing documents may not be color-managed. It is common to encounter the following exceptions to your color-managed workflow: • You might open a document or import color data (for example, by copying and pasting or dragging and dropping) from a document that is not tagged with a profile. This is often the case when you open a document created in an application that either does not support color management or has color management turned off. • You might open a document or import color data from a document that is tagged with a profile different from the current working space. This may be the case when you open a document that was created using different color management settings, or scanned and tagged with a scanner profile. In either case, the application uses a color management policy to decide how to handle the color data in the document. If the profile is missing or does not match the working space, the application may display a warning message, depending on options you set in the Color Settings dialog box. Profile warnings are turned off by default, but you can turn them on to ensure the appropriate color management of documents on a case-by-case basis. The warning messages vary between applications, but in general you have the following options: • (Recommended) Leave the document or imported color data as it is. For example, you can choose to use the embedded profile (if one exists), leave the document without a color profile (if one doesn't exist), or preserve the numbers in pasted color data. Last updated 9/30/2011