I am but a designer. Meaning I try to solve people’s problems.
Some people (like me) want a fine-grained control. They can tweak filmic ad nauseam, following the manual.
Some people want a semi-automatic way to process images. So they can use a preset, leave filmic as set, and bother about exposure.
Nothing is ever required. It’s all about matching intent and method.
AH, I knew it was possible somewhere Thanks !
Yes, the channel mixer is a simple tool, at the foundation of image processing. It does exactly what the input color profile does : a matrix multiplication. As most simple operations, it is very powerful in terms of use. And yet, simple operation doesn’t mean simple to use. I don’t think you can escape some theory if you want to use it.