one option could be to do the exponential colour mapping within nuke itself.
Render out the without any colour mapping (linear 1,1) then within nuke add a colourlookup node, and recreate the exponential curve.
There were some curves vlado put up somewhere which showed what the different colormappings equated to - i’ll have a search for them shortly, but basically in the colorlookup, you’ll see a straight linear line from 0 to 1 - grab the 1 bezier and move it to the right until it hits 2 - this is more or less how to recreate it…
Sorry for double posting but I try to render the light directly in the camera view, and i’ve got value : 1/1/1 with a vray sphere light with intensity value setup to 20.
So my question is : does the exponential color mapping clamping highlight values ?
