Got it! I guess, given the choice, I'd rather go with 1, CIE Lab encoding. No? Seems to me more logical for comparing against actual spectrophotometric measurements. Whereas ICC Lab encoding is limited to =/- 128? If that's the case then either option will yield the same results :( > Try -e1 or -e2? > > I've not tried this myself, but I think what's happening here is that > there are two different ways Lab data can be encoded within a TIFF file > - thus just selecting Lab is ambiguous and cctiff is asking you to > clarify which encoding you want? > >> Oops! Does that mean I should try "1" or "2" with the -e parameter? > > I think so, yes :) Roger Breton