Dear Graeme, > My guess is that the profile has no black point tag, so the ICC default > of 0,0,0 is used instead. Since you've set a black target of 0,0,0, > nothing > changes. That was it. Thanks! Just added the tag myself and all is fine in CMYK world again ;) Best regards, Auke > Auke Nauta wrote: >> I do not have any chart readings of this profile, nor are they embedded. >> The actual blackpoint of the device is approximately 10.5,1.5,1.0 (Lab). > > Right. Does the profile have a black point tag that has this value > in it ? > >> So I use: >> * targen -s17 -g33 -e8 -d4 -f4092 -I -cMy_CMYK_Profile.icc target (.ti1) >> * fakeread -l -b0,0,0 My_CMYK_Profile.icc target (.ti3). >> * colprof -v target (.icm). >> >> Now the thing is that *some* scaling is going on depending on the -b >> parameter during fakeread, but the actual blackpoint is *never* lower >> than >> the initial 10.5. >> >> I'm at a loss here! > > My guess is that the profile has no black point tag, so the ICC default > of 0,0,0 is used instead. Since you've set a black target of 0,0,0, > nothing > changes. > > [ The next release will take a somewhat smarter approach, and determine a > black point if the profile is missing the black point tag. ] > > Graeme Gill. > -- In a world without walls and fences, who needs Windows and Gates?