This tool can be reproduced in an RGB mixer, but you won’t be able to visually represent the desired option in the mixer like you can in a camera calibration tool.
If in the latter you change only one saturation slider in one of the channels, then in the mixer you will have to change all 9 sliders to achieve approximately the same result. The calibration camera is a unique tool and you will not achieve the same results with hue curves. By the way, there are similar tools in ACR/Ligntroom, although they are not as perfect as curves, but we are talking about something else.
This is what I do if I need such a tool in Davinci - I export the tiff file and throw it into Ligntroom. I process it, and put the hald file next to it and apply the same effects to it. After that, we convert such a file into a lut file and throw it into Davinci. No other way. In RGB mixer you need to have much more experience in order to solve this issue intuitively - I’m not talking about the correctness of the solution, about mathematical correctness, but about an intuitive approach.
Well, in general, for those who are interested in what they do, one program is always not enough, aren't we?
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