u/myblueear

I'd like to get as close to the theoretical color as possible, but don't quite know how.

Hello.

TL;DR: How do I linearize a RAW foto of a SpyderChecker to get it as close to the reference as possible?

I want to digitize an antique color-sample collection (Baumann-Prase, 1928), have fotographed the whole thing (some 40 cards with small color-patches organized in "gradients"). For the fotos, I tried to create a situation as precise as possible and made the pics in cloudy daylight, and got myself a Datacolor SpyderChecker24 for the color-reference and calibration of the fotos. So far so good (I thought). Being new to RAW _and_ DarkTable doesn't help either...

Now, I am a bit at my whits end, I'm totally unsure how to proceed: Do I make adjustments until the digital patches are the least visible on the colorchecker-foto? (Make a visual calibration?) Or is there another way/method?

Glad for any hints and pointers!

https://preview.redd.it/lmjrrwjd7dwg1.jpg?width=3411&format=pjpg&auto=webp&s=6528a9944c30a3a0fc68c19d43bab32d2dfe59f7

https://preview.redd.it/s6omuwjd7dwg1.png?width=2806&format=png&auto=webp&s=dfcc8271d1cdb1e989df883972ca5055b8d61730

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u/myblueear — 6 days ago