Well, I don't know. It seems to me that several targets used for camera profiling (including expensive ones) are weak in greens and also do not extend much beyond AdobeRGB towards blue and red. Furthermore, the lightest and darkest patches are often far from L = 100 and L = 0 respectively. Now, I don't think the Digital Target 4 is a great deal better. Can anyone send me the reference data so that I can check this? I don't care for mere opinions, I would rather trust a spectrometer and the computed reference data. That is what we profile against after all. Stephen. ________________________________ From: Graeme Gill <graeme@xxxxxxxxxxxxx> To: argyllcms@xxxxxxxxxxxxx Sent: Sunday, 11 September 2011 5:29 PM Subject: [argyllcms] Re: CMP target reference data Stephen T wrote: > Can anyone supply or point me to reference data for the CMP digital target 4: > > http://www.cmp-color.fr/eng digital target.html Fascinating that it is called "Digital Target 4", yet looks very similar (identical ?) to the (confusingly named) "Digital Target - 3". Confusingly named because there was a quite different "Digital TargeT 003". So was the name "Digital Target - 3" a mistake, or is the "Digital Target 4" actually different ? Graeme Gill.