Originally Posted by Jeroen1000
Thank you for the link. I'm still unsure what the option does. Could you spell it out a bit please?
The function'USer Chromaticity' allows to rectify the Gamut to bring it the closest possible of the profile defined in entry Chroma.
As it is often impossible to realize a correction completed on the whole illuminated area the iScan contents with making it on the range 0 to 75 %.
It is what explains that the summits of the CIE triangle may not coincide with those the standard (stand on the outside of the CIE), on the other hand all the saturations below 75 % are correct.
This operation is made by mathematical interpolation, that imposes that the display is linear.
If it is not the case the results can be worse.
By taking the example of the JVC it will be the case if you use one of the modes different from Wide2 because the device has already made some changes in the processing of colors.
The brought improvement will thus see more on the graph of the saturations than on the diagram CIE where the good positioning of the saturations is more difficult to read.
This is my understanding of the functioning and I hope to have been more clear in spite of my English.