Color Balance RGB vs RGB Curves

[Donatzsky (Nis Donatzsky)]

@tenderlove

The 4 ways tab, specifically changing the hue/chroma for lift, gamma, gain, and offset, could be thought of as placing specific points on the RGB curves and adjusting them to the appropriate color though, right?

No. Not at all. As I said, Color Balance RGB has nothing to do with curves. 4 ways is exactly the same as lift/gamma/gain/offset or slope/offset/power, with basically only the specific math being a little different. This should be covered in detail in the first of those two books. It’s also explained in the manual.

ASC CDL

An in-depth look at ASC-CDL based color controls - Pomfort

What Is A CDL And When Do You Use It?

This grey ramp can help you to visualize what is happening:

Blender AgX in darktable (proof of concept)

Odd… I just fired up the version that I made yesterday and don’t have the problem with grey scale: [Screenshot 2025-04-22 141641] Here’s the image I used, if anyone is interested: [Grey Scale Gradient]