Hi Arturo,
This was my mistake, deltaE is visible in all modes - I was running an old version.
I have tried today the most recent version (5.7-1765 on win 10), and I find that the DeltaE visualization has maybe a bug: instead of mask coded with false color like in the previous release, it is all grey and I cannot judge about the deltaE anymore (see the attached picture, with scope at 15). Is it normal?
