Following up on:
I’ve created an artificial test image with a grey gradient and some coloured spots, in a completely unscientific manner, hoping to gain a better understanding of highlight recovery (not blown raw pixels, simply the behaviour of the algorithm around filmic’s white point, chosen by the user). For these experiments, I set ‘add noise in highlights’ to 0.
gradient-with-colours.tif (5.4 MB)
gradient-with-colours.tif.xmp (5.3 KB)
There are some interesting behaviours. Take this screenshot, and note that reconstruction threshold is + 0.49 EV (above user selected filmic white point), and check how the colours in the yellow square (and those above it) look:
Decreasing the threshold decreases brightness and increases the vividness of the coloured spots:
However, decreasing the threshold further washes them out again:
My guess is that be decreasing the threshold further, these areas now count as ‘brighter’ internally in the recovery logic, and the ‘structure’ (as opposed to ‘texture’) portion of the algorithm gets more weight processing them. To test this, let’s drag the structure/texture slider way up:
It’s too late for me to continue today, but if you find this interesting, let’s continue tomorrow or later.