Datacolor SpyderCHECKR Color Chand Calibration Tool for Digital Cameras - Manual (Page 22)

SpyderCHECKR Rendering Modes
In SpyderCHECKR's Preferences pane you will find a pop down list of mode
choices. The three modes are described below:
•
Colorimetric mode should offer the most literal results, and is best
when attempting to reproduce artwork or product colors.
•
Saturation mode offers results, which are generally more pleasing for
many types of images.
•
Portrait mode selectively reduces the color saturation of the skintone
components to make portrait processing easier.
The effects of these modes are subtle, and may not be noticeable on some
images.