CMYK processing options
Where: Channel | Color Management | CMYK tab
This tab allows you to configure color management properties for CMYK input files.
Note that conversion to Lab disables the choice of output profile and rendering intent.
Rendering intent: Here you may choose the method used for the conversion. For images on print, Perceptual or Relative Colormetric is recommended. Saturation may be used for computer graphics, while by choosing According to Profile, the method preset in the color profile will be utilized. By choosing SmartRender™, Color Factory will apply the rendering intent selected by clicking the SmartRender™ Settings button.
The idea with SmartRender™ is to somehow manage the colors that can’t be reproduced in the new color space in a better way than the standard rendering intent. The basic way to use SmartRender™ is to choose Relative Colormetric as the initial rendering intent and Switch to Perceptual rendering as the alternative method. Given than the percentage of out of gamut pixels is below the set threshold, Relative Colormetric rendering will then be used, whereas images that produce a greater number of out of gamut pixels will be processed with perceptual rendering. Alternative initial rendering methods are Perceptual, Saturation and Absolute Colormetric. There’s also a fifth alternative, Auto select, which tries all the other four methods and chooses the one that produces the fewest out-of-gamut pixels.
When the out-of-gamut threshold is exceeded you can also choose from a number of options:
Switch to perceptual rendering: Will render the image again using Perceptual rendering instead of Relative Colormetric. This will reduce the overall color saturation in the image to fit within the new color spectrum.
Reduce saturation on all pixels with out-of-gamut colors: Reduces saturation on only the out of gamut pixels to fit them inside the new color spectrum.
Reduce saturation on the whole image: Reduces the overall image saturation.