In Cycles, is there a way to set a sampling threshold based on brightness? Take the following image for example:
The dark areas contain virtually no visible detail, yet they’re given the same amount of rendering attention as the bright highlights. I assumed the new Adaptive Sampling would work similarly to Lightwave’s, which focuses on details and disregards low-contrast areas (such as shadows) according to a set threshold. Rather, it seems to throw samples at noise-prone areas regardless of their actual visibility (if I’m not mistaken).
This means instead of a few seconds/minutes per 2K frame, I’m looking at over 3 hours per frame, most of which is wasted on shades of black… so for the animation I have in mind this could mean the difference between days, and months of rendering.
Thanks for any guidance!