…meaning, it’s just the balance between high red and high blue, ignoring green?
Try this math on a channel mix TOP:
T = Temperature value (default is 0)
red gain = 1 - (T / 2)
blue gain = 1 + (T / 2)
Increase T to cool the image down, decrease to warm it up.
This will only work in a linear color space so make sure to linearize in the input texture, apply the adjustment, and then transform back. I do this with a math TOP in the attached sample but OCIO would work as well.
white balance.toe (3.6 KB)
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