LAB colors are absolute, meaning that the color is exact. It’s what’s known as device independent; meaning that the LAB color space is the only way to communicate different colors across different devices. Using SilverFast I get perfect scans in CIE LAB color space.
Device-independent Colors
The L*a*b* color system was developed by CIE (International Commission on Illumination) in 1976 in order to display the perceptional color characterization more properly.

The L*a*b* color space is constructed on the basis of opponent colors theory and contains all the visible colors. One of the main features of the L*a*b* color model is its device independence, that is, the colors are defined independent from the kind of their creation and rendering technology.
SilverFast Ai Studio offers the possibility to scan into L*a*b* color space. Because of the device independence of L*a*b*, such scans are particularly suitable for true color transmission to other devices, such as a printer.
Open the SilverFast Preferences, which you will find in the top menu bar.
Select the ‘CMS’ tab for Color Management.
Choose ‘CIE-Lab’ from the ‘Working space → Output’ menu.