Hiya,
I am looking to access in an expression or script real-time the
brightness value of a ramp to link with a grade.
I know the curve tool does a bit of that in some way but it has to compute.
to make it simple i want the multiply of a grade node changing depending
of max value of luminance of the input
exemple : myGrade.multply=input.maxlum*2.5
In fact it is a bit more complex as the value change following an
exponential curve and it would be even better with a kind of automatic
'setdrivenkey' like maya
ex if the maxlum is 1 set the multiply to 1, if the maxlum is 0.5 set
the multiply to 1.30....
any idea out there ?
cheers
Olivier
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