Hello Graeme I was looking to pre-compute the result of a relative + BPC conversion into the Perceptual table. Like this we could avoid issues from the BPC algorythm in other applications and CMMs. Another advantage would be that the black point of a source RGB (e.g. AdobeRGB1998 RGB 0/0/0) could be preserved, as it is currently using B2A0 conversions with Argyll (which is great by the way). In addition to this: Is there any method I can toggle for out-of-gamut mapping other than CIECAM02? I am looking for dE2000 for example. Thanks, Joe Am 07.10.2013 um 08:57 schrieb Graeme Gill <graeme@xxxxxxxxxxxxx>: > Joe Tschudi wrote: > >> Would that theoretically mean that using -S AdobeRGB1998.icc in colprof >> should deliver the same result for: >> 1) Conversions using Relative + BPC >> 2) Conversions using Perceptual >> (for example converted in Photoshop using Adobe (ACE) with selectable Black >> Point Compensation) > > No, I wouldn't expect exactly the same result - they are different intents, > and Adobe > BPC is not the same black mapping as Argyll gamut mapping, which is done in > CIECAM02 > space and uses different algorithms. > > Graeme Gill. > >