FAQ: "Our old test method said to set the following with the Universal software:
- Illuminant: C
- Observer: 2
- MI Illuminant: D65
After our EasyMatch QC software was installed we have the settings as in the following screen shot:
Am I missing something? We don’t seem to have set the MI Illuminant D65 that our test method requires."
Metamerism Index is a metric based on total dE* color difference based on two different illuminant/observer combinations. Unfortunately it is a seldom used metric and it doesn't matter what the MI illuminant/observer is set to unless you select MI for display.
In our legacy Universal software, the MI illuminant/observer selection was given far too much prominence and just became a point of confusion with end users .
In EasyMatch QC, the selection of MI illuminant/observer is still there but only appears with Metamerism Index is selected as a Color Difference for display.