>>4352007Are you doing fine art printing or scientific shooting that requires exact colors? Are you matching two different systems? Totally unnecessary, but you can grab a color checker and use the related software to make your own. This just seems like another avenue of distraction to prevent yourself from simply learning how to process.
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>>4351776Original jpg vs darktable. I have literally never used Darktable before in my life, most of the time was spent figuring out where things are, but this is what I got within 10 min. No ICC profiles or anything like, just the same basic adjustments available in any RAW program. Still lots of room for improvement in matching, but this shouldn't be as hard as you're making it out to be. You should 100% get as close as this within 5min.