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Input profiles and output profiles
Input profiles and output profiles
Learn about input and output profiles
Color spaces
Devices as monitors and printers create colors in a different way. Because of these differences
colors are described differently for each device.
The different methods of describing colors are called color spaces. The color space specifies how
color information is represented in an image. Each device has its own individual color space and
range of colors that it can display or print. In addition, each device can have one or more ICC
(International Color Consortium) profiles. ICC profiles are used when an image or a object is
converted to the color space of a different device.
A
[382] Color spaces of human eye (A), RGB and CMYK (B), and other devices (C, D, E, F, and G)
RGB
Devices such as monitors, digital cameras, and scanners generally use RGB color spaces to
describe colors. Two implementations of RGB color spaces are sRGB and Adobe RGB.
CMYK
Color printers use the CMYK color space. Implementations of the CMYK color space vary from
printer to printer and from media to media. FOGRA has several implementations of the CMYK
color spaces.
Input profiles and output profiles
An input ICC profile can translate color data created on one device (such as a monitor) into the
Profile Connection Space (PCS). The Profile Connection Space (PCS) is necessary to connect the
input and output color space by describing the colors in a device-independent way. The Profile
Connection Space (PCS) color space, such as the CIELAB color space, defines colors as true
representations of what the human eye can perceive. (
The output ICC profile translates the color information from the Profile Connection Space (PCS) to
the CMYK color space of the printer.
Input profiles on the printer
The color values of an image can be described in the RGB or CMYK color space.
The Settings Editor has a list of input profiles that can be selected. Color presets and transaction
setups have a reference to one of the input profiles. (
about transaction setups on page
294
Chapter 11 - Manage color definitions
RGB
CMYK
B
C
112) You import the input profiles from the Settings Editor.
D
E
Learn about color differences on page
Define a color preset on page
F
G
250)
Learn
291,
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