

As an artist is usually working to a render time limit or amount of rays the aim is to allocate those rays as effectively as possible to minimize the noise in the most efficient manner. Noise nearly always comes from insufficient sampling, but increasing sampling for the wrong rays can make the render times increase without helping to remove the noise.

Non-energy conserving shaders, networks or settings.Noise can be caused by: Insufficient Sampling: The first step in removing noise from your renders is to identify where it is coming from.
