Prerequisite: This option is available in the sequence only if "Prinect Portal Services" is installed and registered in the system environment of the Prinect Manager.
The "PageProof" sequence is enabled for working with Prinect Portal Services if this option is set.
"Rendering Intent for Pixelproof Viewer" parameter
You can select a "Rendering Intent" for a softproof on the screen with the Pixelproof Viewer in the "Remote Approval" workflow. This prepares the softproof data with color management for a specific proof view.
Rendering intent determines how the color space adaptation should be executed: Since losses always occur during a color space transformation, it can be helpful to, for example, retain the photographic perception of an original and to accept a limit on the number of color values. The following parameters are available for rendering intent: "Saturation", "Perceptual","Relative Colorimetric" and "Absolute Colorimetric":
•Relative colorimetric (no paper white simulation)
Colors are rendered taking solely the light source into account. The rendering intent of the print medium (e.g. the color of the unprinted paper) is not taken into account. For example, the illuminant of a monitor would be correctly rendered on the print medium. All colors that lie within the output color space are rendered identically. All colors that lie outside of the output color space are displayed on the margin of the output color space. The advantage of this rendering intent is that different illuminants of different output media are taken into account. The disadvantage is that the color adaptations are not exactly retained when switching from one output medium to another. As a result, very dark or very colorful details in the originals can be lost when they are reproduced. The printing material is not simulated during an output process simulation. If production run paper is used during the simulation, the result is the same as if you used the "absolute colorimetric" rendering intent. This rendering intent is suitable mainly for vector graphics.
•Absolute colorimetric (paper white simulation)
Colors are rendered taking the light source and the medium illuminant (e.g. the color of the unprinted paper). For example, the illuminant of a newsprint paper which is shifted from illustration printing paper towards yellow compared to the illuminant of paper is rendered with a yellowish cast. That is why "Absolute colorimetric" is the default setting for a proof output. All colors that lie outside of the output color space are displayed on the margin of the output color space. The advantage of this rendering intent is that the exact color values are retained when switching from one output medium to another. The disadvantage is that any colors that lie outside of the output color space cannot be distinguished. This rendering intent is especially suitable for logos or monochrome objects which must be reproduced exactly the same way on different output media.
Note: You should define the following settings for rendering intent if you want true-color proofing:
·You should use "Relative Colorimetric" rendering intent if you do not need paper white simulation.
·You should use "Absolute Colorimetric" rendering intent if you need paper white simulation. Consequently, all colors in common of the source and target color space are rendered identically. It makes sense to use this rendering intent since a proofer normally has a wider gamut than the print process it simulates. In case colors in the color file you want to proof extend beyond the proofer's gamut, these colors will be mapped to the "edge" of the proofer color space. This means, all colors not covered by the proofer's color space are rendered with those colors the proofer can just about support. As a result, shadow areas may lose detail.
·The "Perceptual" and "Saturation" rendering intents are not suited for proofing. You can use them in the "PageProof" sequence if you wish to use this sequence for color prints on a proofer where a true-color proof preview is not important.