Tom Schumm wrote: > Well, an LCD display should be more-or-less additive (close enough, anyhow), Hi, You can't assume that. A Native LCD response is nothing like a CRT (it doesn't have a power curve response), so all LCD displays process the signals to make them respond more like a CRT. This processing can be quite intrusive, and may take a form that wrecks any additivity assumption. > and i1Profiler does generate a reasonably accurate and usable profile, and it > at least claims to be using a matrix profile. It's impossible to comment without anything to go on. Please email me (_not_ the list) the .ti3 file in question. Graeme Gill.