<ECI RGB is based on D50 instead of = D65 it works better as a editing
space for prepress work.>
I this why, for example, when an Image is converted from Adobe RGB to
Whatever-CMYK using absolute colorimetric, a major color shift occurs,
while this is not the case with ECI RGB (not that I'm often inclined to
do such a conversion), or is there something else invlolved that I am
unaware of?
Michael Eddington