Hello Graeme Hill. Thank you for your reply. Here you can see a print screen of the commented issues: http://i436.photobucket.com/albums/qq82/aaruizz/comparisonArgyllvsColormunki _zps3806b60a.jpg I started with a chart of 210 patches. When I observed the results I increased the number of patches to try to solve it. I have tested with 210, 396, 1188 and 1980 patches. On all this cases occurs that the relative colorimetric loose information on shadow details and has a black less deeper (could be more neutral)than the perceptual intent. But the perceptual intent has a muted or washed blue color and a magenta cast, specially appreciable on yellows and skin colors (appreciable on softproof or on prints illuminated a 500cd/m2, 5000k and CRI>93) but a lot of shadow details and a black a lot more deeper. I don't know if using perceptual intent I see a magenta color cast beacause I have not neutralized the gray axis. I don't know if it is possible to do with Argyll v1.4.0. If you confirm that is possible I will investigate this case to obtain more natural colors using perceptual intent. I attach you the ti3 files corresponding to the 210, 396, 1188 and 1980 patches. Could be that with a greather number of ti3 files you can discover, more easily, where is the problem. Also I attach you a ICM profile (from the chart of 396patches) if you want to softproof with them. I hope you can discover what is happening or something that I can try to do. Please, if you need that I do something or you need other files, don't hesitate to request them to me. Thank you very much. Best Regards, Xavi. -----Mensaje original----- De: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] En nombre de Graeme Gill Enviado el: lunes, 08 de octubre de 2012 5:29 Para: argyllcms@xxxxxxxxxxxxx Asunto: [argyllcms] Re: ArgyllCMS: shadow details and blue color issues. What I'm doing incorrectly? Xavi wrote: > *colprof -v -qu -iD50 -o 1931_2 -S AdobeRGB1998.icc -cmt -dpp > -D"Description Profile" -O"NameProfile.icm" > Argyllv140_396parxes48Gris3Blanc Hi, please email me (or post a link to) a .ti3 file that will illustrate the problem. Thanks, Graeme Gill.