Bedienungsanleitung Adobe ACROBAT DC - 2015 (Seite 530 von 538) (Englisch)

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Color management

Last updated 4/7/2015

Working with color profiles

About color profiles

Precise, consistent color management requires accurate ICC-compliant profiles of all of your color devices. For

example, without an accurate scanner profile, a perfectly scanned image may appear incorrect in another program,

simply due to any difference between the scanner and the program displaying the image. This misleading

representation may cause you to make unnecessary, time-wasting, and potentially damaging “corrections” to an already

satisfactory image. With an accurate profile, a program importing the image can correct for any device differences and

display a scan’s actual colors.

A color management system uses the following kinds of profiles:

Monitor profiles Describe how the monitor is currently reproducing color. This is the first profile you should create

because viewing color accurately on your monitor allows for critical color decisions in the design process. If what you

see on your monitor is not representative of the actual colors in your document, you will not be able to maintain color

consistency.

Input device profiles Describe what colors an input device is capable of capturing or scanning. If your digital camera

offers a choice of profiles, Adobe recommends that you select Adobe RGB. Otherwise, use sRGB (which is the default

for most cameras). Advanced users may also consider using different profiles for different light sources. For scanner

profiles, some photographers create separate profiles for each type or brand of film scanned on a scanner.

Output device profiles Describe the color space of output devices like desktop printers or a printing press. The color

management system uses output device profiles to properly map the colors in a document to the colors within the

gamut of an output device’s color space. The output profile should also take into consideration specific printing

conditions, such as the type of paper and ink. For example, glossy paper is capable of displaying a different range of

colors than matte paper.

Most printer drivers come with built-in color profiles. It’s a good idea to try these profiles before you invest in custom

profiles.

Document profiles (Not applicable to PDFs) Define the specific RGB or CMYK color space of a document. By

assigning, or tagging, a document with a profile, the application provides a definition of actual color appearances in the

document. For example, R=127, G=12, B=107 is just a set of numbers that different devices will display differently. But

when tagged with the Adobe RGB color space, these numbers specify an actual color or wavelength of light—in this

case, a specific color of purple.

When color management is on, Adobe applications automatically assign new documents a profile based on Working

Space options in the Color Settings dialog box. Documents without assigned profiles are known as untagged and

contain only raw color numbers. When working with untagged documents, Adobe applications use the current

working space profile to display and edit colors.

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