I want to create a gizmo to add grain based on several parameters AND affecting in different ways to shadows/midtones/highlights. I’m a little lost right now.
I thought that I could use the ColorCorrect as a base and use its "Range" curves (which contains s/m/h) to affect different parts of the image. I guess I should somehow extract the information from the ColorCorrect for every region and use it as 3 mattes to the grain nodes… that’s the theory, but I’m not really sure how to implement
it.
I’m attaching an image with what I think whould be done in theory. In red, I’m marking the parts I’ve no idea how to proceed.
(The Grain nodes work by using the alpha channel, that’s why I’m copying the matte first to the alpha channel).
Any help would be very appreciated.
Many thanks.
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