Hi,
I’m experiencing the same problem… My Techkon SpectroDens produces results that are quite different from my EyeOne. When measuring a MediaWedge with the Techkon I get results that are different and even contradictory to my EyeOne. And not only the paperwhite, but also the mean dE, the primary colors and graybalance…
I’m aware that no measurement device is the same, but I was unpleasantly surprised when I discovered that my < 1 deltaE proofs were actually 1.8 deltaE according to my Techkon.