Color Matrix/Davinci Channel mixer

[Orash Rahnema]

Hi all,

I have few questions about using matrices or the use or the Channel mixer. 

My main question is, what do you use it for? 

Is there a tech or creative use or it that youd like to share?

 

For example I know that is used to transform from a known set to primaries to another target known set. 

How do you know the target Matrix, how can i find some known matrices ti experiment?

Other then this, is there anything else?It'sprobably the tool i use the less. 

 

Cheers,

Orash

[Jussi Rovanperä]

The primaries for RGB color gamuts are XYZ coordinates.

The matrix transform from one set to another is done in XYZ color space, so those transform matrixes cannot be used in RGB.

I'm rarely using the rgb mixer, except for some channel repair stuff and B&W conversions. I understand how the RGB mixer controls transform the rgb color space, but it is still very unintuitive way to do things, so I prefer the more direct way of using the primary controls and the different curves.    

I'm sure there are some RGB mixer ninjas lurking here, so please chime in!

 

 

[Jussi Rovanperä]

I've been using Fusion to study how color transformations work, that's a good tool for a non-programmer like me.

[Anton Meleshkevich]

You can make sort of teal-orange using G and B controls on R channel.
I didn't touch anything except RGB mixer.

Edited June 27, 2019 by Anton Meleshkevich

[Thomas Singh]

I have found that I can force more noise into the image by differentiate and tweek the different color chanels. That could be useful when you want more grit into the images and could e.g create some really interesting shapes on white surfaces, overcast days etc.

Edited November 16, 2017 by Thomas Singh