Adaptive Sampling with Octane Render for Cinema 4D
An excerpt from “What’s New in Octane Render v3.x”
Adaptive Sampling is a rendering technique that disables sampling for pixels that have reached a specified noise threshold. This allows you to bump up the max. samples quite high and then rely on the adaptive sampling to figure out which pixels actually need that many samples and which don’t. It is mostly useful is in scenes that have areas that are a lot more noisy than others. If your whole image is equally noisy, this feature will not help.