Yep, what @priort said…
I did run each profile through exiftool to get a dump of all the tags, not JSON, but you’ll get the primaries matrix and a few other things that might help with hand-creating what you need.
RGB-462-532-628-2.2D65.txt (2.3 KB)
Display P3.txt (2.1 KB)
LG D65 sRGB 2024.txt (2.3 KB)
Thank you for the help!
Unfortunately it does not work. It asks for “Look” type JSON, so it might actually be an ICC transformed into a LUT and then into JSON, because I found the files the software uses and they’re based on sRGB and AdobeRGB… Who knows, just too complicated. I just wish Anders kept the old algorithms as optional at least. Honestly, version 2 of Lumariver is not quite there. But, these are the limitations I guess. Adobe is far from perfect too, they change slowly if at all. Unfortunately, there is other RAW developer that can do what Lightroom does. C1 is not for me, it will never be. Affinity neither. The only RAW developer I use other than LR is RawTherapee, but not for large batches of images.
One of the most important feature of LR is the use of 3D LUTs in conjunction with the DCP profiles. You can’t beat that!
Can’t you do that with Rawtherapee and throw in the Adobe DCP profile editor which is a powerful tool and as far as color management goes I think you have those points covered…maybe that is not what you meant…
Those profiles you provided are simple profiles with no gamut tables in them so I am not sure simply converting them to json would have done you much good anyway
I didn’t want the approximation of Adobe DCP profile editor. I get around the problem with what Lumariver provides, the AdobeRGB gamut compression in the situations that require some color taming. It’s Adobe’s fault anyway, they chose proPhoto gamut since the beginning in order to satisfy printing workflows, most of which have CMYK primaries outside AdobeRGB and even Rec.2020, not near as saturated but necessary none the less. While this is a good solution for printing, ProPhoto is not ideal gamut for image processing because the primaries are not in equilibrium with one another, so trying to make it work as an image editing profile rises a lot of problems I already mentioned, of which the ugliest being that it saturates into imaginary colors when in fact those should be clipped.
Exporting in P3 do clip the colors anyway, but the problem are the areas close to blown highlights where if not for prophoto, they wouldn’t look so saturated and artificial, plus some colors that get outside Lab volume when profiling the camera, inevitably, that should really be in a much more manageable gamut like P3 or Rec.2020 or Arri.
Nowadays the printing market is slim, everybody loves their OLED TVs for displaying pictures so having at least the option to choose a display friendly workflow in Adobe LR would not be a stretch.
It looks like the format you need for your JSON file is this one…
THe manual suggests to use it as a template…
You could dump the look settings added at the end and change the “inner” gamut matrix from the adobe rgb to xyz to the correct one for Display P3 and I think you could review and experiment with the gamut settings provided to suit your taste…
From here
https://www.russellcottrell.com/photo/matrixCalculator.htm
I think this is the matrix you want…
