Is the ∆E (Delta E) calculation for the color lookup based on CIE L*a*b* or CMC? Boris Bergmann August 31, 2021 13:36 The ∆E (Delta E) calculation is based on CIE L*a*b* D65/10° Related articles What is the general life of the ColorReader and its battery? What fan decks are available in North/South America, in Europe and in Asia on the ColorReader / ColorReader EZ / ColorReader PRO that sold by Datacolor or Amazon? My ColorReader is not connecting to the ColorReader app I am getting Invalid Calibration on my ColorReader / ColorReader EZ / ColorReader PRO and my colors are coming wrong When my paint company has fan deck updates, do my users get this update automatically?