On Wed, Oct 1, 2008 at 8:00 PM, Kai-Uwe Behrmann <[EMAIL PROTECTED]> wrote: > Am 01.10.08, 19:19 +0200 schrieb Pascal de Bruijn: >> On Wed, Oct 1, 2008 at 6:33 PM, Marti.Maria <[EMAIL PROTECTED]> wrote: >> > >> > Hi, >> > the XYZ-Lab conversion is done automatically. If you experience mismatches, >> > that may be due to bugs in the CMM. >> > Check photoshop or the ICC reference implementation to see who is buggy. >> >> Thanks for your reply. >> >> But is it likely that LCMS in buggy on that part? Has that codepath never >> been >> well tested? >> >> I'm asking, because >> 1. I don't have another CMM to try, I don't have a Photoshop license. >> 2. It's not entirely unthinkable, that Canon DPP, does another proprietary >> color transformation besides applying the ICC profile. > > It would be helpful to ask more concrete questions. > > What is misbehaving? Compared to which software? What means Canon DPP?
It's Canon Digital Photo Professional. It's a Raw developer. > As a hint: you know already about Argyll and littleCMS. These are two > implementations. You can look at the accompanying tools for ICC colour > transformations. Argyll does something entirely weird with this commandline: tifficc -v -i canon_eos_400d_standard.icc -t 1 -c 2 IMG_3562.tif IMG_3562_argyll.tif LCMS works, but the colors seem a bit off when compared to the in-camera results and DPP: cctiff -v -p -i p canon_eos_400d_standard.icc -i p sRGB_IEC61966-2-1_noBPC.icc -e 1 IMG_3562.tif IMG_3563_argyll.tif I have samples (including the profile) available here (I'm converting to sRGB): http://files.pcode.nl/temp/icc/ If somebody has access to Photoshop, and the time, I'd love to see what the results look like when Photoshop applies canon_eos_400d_standard.icc as source profile to IMG_3562_NOPROFILE.TIF, converting to sRGB. Regards, Pascal de Bruijn ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
