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Can I have different compositor nodes for different parts of my render? I presume the way to do it would be using masks but I just cant figure out how to create/make them work.

Half of my render is blue and the other half is orange, so I would like to have different color balances and stuff for each side.

So my question is: How can I do that? And if using masks, how to I create a mask of my render and them use it on the compositor?

Thanks! =) (sorry if the question was confusing)

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    $\begingroup$ Hi :). Yes, you can limit compositor nodes using a mask (any BW image/gradient will do). But please add an example of your render and preferred mask type :) $\endgroup$ Sep 17 at 18:17
  • $\begingroup$ So that's a preview of my render and the red circles would be the two masks I would like to composite individually. imgur.com/a/lKr6qtm $\endgroup$
    – horsse
    Sep 17 at 22:40
  • $\begingroup$ Ok so I found out how to create masks, now how can I composite them alone? Like, have a different color balance node for each mask? $\endgroup$
    – horsse
    Sep 18 at 4:33
  • $\begingroup$ Ok so I was able to figure out how to use the color balance, I just connect my mask node to the "Fac", but how about other nodes? Like "Lens Distortion" and "Glare" for example. $\endgroup$
    – horsse
    Sep 18 at 4:42
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    $\begingroup$ Hi :). Simply use a Mix node, with your mask plugged into fac. You can use it with any input. $\endgroup$ Sep 18 at 8:41
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as Jachym commented here is an example:

here with part glare: (as you wanted, solution via mix node and mask image)

enter image description here

without glare: (i just muted the glare node)

enter image description here

with full glare: (glare connected to viewer instead mix node to viewer)

enter image description here

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