There’s an issue with Corona colour correct node. It seems that it clamps data that is going through it. See the video for details.
Interesting. Would like to know the answer too
I’d love the Color Correct node to have min/max clamp values. Maybe it can be added when fixing this?
I was able to reproduce this behavior on my end and have logged it in our system as a feature request as many operations in corona color correct does not support negative values from input maps.
(Report ID=CMAX-1425)