More Prismasync Color Information - Canon imagePRESS C800 Series Operation Manual

More PRISMAsync color information

More PRISMAsync color information
The color management of PRISMAsync controls the reproduction of colors and handles the
conversion of input colors (RGB, CMYK, spot colors) to printed colors on paper. PRISMAsync has
two instruments for easy color management across the entire workflow, color presets and media
families, so that the operator does not need to perform color management tasks on a job-by-job
basis.
Color experts can use more color management functions with the advanced color management
license.
Color reproduction for your output on page 26
See
families and the features of the advanced color management license.
You can find more PRISMAsync color information below.
Input and output profiles
Input and output profiles define the transition from input colors, for example, the RGB color
values of a photo, towards output colors or, for example, the CMYK color values of your printer.
The color management of PRISMAsync transforms the color input space to the color output space
via the standards of the ICC, the International Color Consortium.
PRISMAsync comes with high quality color output profiles for both coated and uncoated media.
PRISMAsync links output profiles to media via media families. Each media family has three
different output profiles for the halftone screens Normal, Fine and Error-diffusion. (See
Editor media attributes on page
Rendering intents
A color gamut is a set of colors a system can produce. Input colors do not always fit in the color
gamut of an output device. For colors that exceed the gamut of an output device, color space
rendering intents are used for gamut mapping. The rendering intent tells the color management
system how to handle colors that do not fit into the destination color gamut. The following
rendering intents are available on PRISMAsync:
• Relative colorimetric
Frequently used and suitable for proofing applications on reference paper. White point
compensation is applied. The white point of the output color space is the color of the used
media.
• Absolute colorimetric
Mainly suitable for proofing applications on bright white paper. No black and white point
compensation is applied, so the precise input paper color is simulated on the used media.
• Perceptual
Mainly suitable for photographic input. The colors are mapped in a continuous way and color
nuances are recognized. White and black point compensation is applied.
• Saturation
Mainly suitable to obtain highly saturated colors and business graphics. Out-of-gamut colors
are mapped to more saturated colors. White and black point compensation is applied.
Spot Colors
Spot colors standardize and predict colors, so that output colors always match a specific color
value. Spot colors allow the printing of unique brand colors for logos or business graphics. Spot
colors are converted to the proper CMYK output color value via spot color tables or spot color
libraries.
266 Chapter 9 - References
for a description of color presets, media
294)
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