Color Conversion
With this node you can do color conversion.
It has the following configuration options:
- Input File Test: here you can define the input file. Select the pencil to open Expression Builder.
- Selection only: if you select this checkbox, only the objects that were selected (for example from a previous node) will be taken into account for the color conversion.
Profile Source
- Color Profile: here you can add the input ICC profiles. Select + to add an input color profile. Select - to delete an input profile.
- Exclude Separations: here you can specify one or multiple separations that are in the input file and that are described in the input ICC profile but that you want to exclude from the color conversion. For example, if you want to keep 100% black as 100% black, add black to the list of separations to exclude. Use a comma separated list if you want to define multiple separations.
- Do not convert separation names: here you can specify separation names in the input file that you do not want to convert. For example Diecut or Varnish. Use a comma separated list if you want to define multiple separations.
Destination Color Space
- Output Profile: here you can define the destination ICC profile.
- Use profile from Device Link: if you select this checkbox, a DeviceLink profile will be used. A DeviceLink profile represents a complete color transformation from input to output, without the use of an independent profile connection space. It can only be used for a conversion between two specific device color spaces.
- Assign profile to artwork : if you select this checkbox, the profile will be assigned to the artwork.
Options
Rendering Intent: here you can select the way color conversion
from one color space to another will be handled. It will also determine also how the
source colors are adjusted when they exceed the output gamut. Options:
- Perceptual: if you select this option, the colors will be rendered in a way that is natural to the human eye by scaling the entire input gamut to the output gamut while preserving a distinct relationship between the gamut colors. Perceptual is mostly used for images and the Japanese printing industry.
- Relative Colorimetric: if you select this option, the white point from the input gamut will be mapped to the white point of output gamut and renders all colors in relation to this mapping. Colors outside the gamut are mapped to the closest color of the output gamut. Relative Colorimetric is used in the European and North American printing industry.
- Saturation: if you select this option, the entire input gamut will be scaled to the output gamut while preserving or increasing the saturation of the colors in order to keep them vivid. This will influence changes in hue and lightness, which is unacceptable in the printing industry. Saturation will be used for business graphics like graphs or charts.
- Absolute Colorimetric: if you select this option, the colors will be displaced so that the source white point aligns with the destination white point, while Absolute Colorimetric preserves the white point and in gamut colors. Out of gamut colors will be clipped. This rendering intent is useful for previewing how paper color affects printed colors.
On Input Profile Mismatch
In this section you can determine what happens when the input profile is missing or
does not match the working color space. This can happen when opening a document or
copying and pasting objects from one document to another containing a profile that
is different from the current color space profile or containing no profile at
all.
- Ignore object profile: if you select this checkbox, the object profile will be ignored.
- Allow profile mixing if you select this checkbox, multiple profiles will be combined for the conversion of the color.
- Allow Lab based conversion: if you select this
checkbox, the Lab value of the color will be used for the conversion.
Note: This only works when an output profile is defined (no DeviceLink profiles).
- Allow default conversion: if you select this checkbox, the default conversion will be done.
Extended Gamut Conversion
- Remap Separation Names: here you can define the list
of separation names that have the Extended Gamut profile mapping attached.
Note: You need to install a color book with Extended Gamut Conversion definition.
- Error if no separations match: if you select this option, the workflow will error if the none of the separations listed could be converted to Extended Gamut.