Quote - > Quote - > Quote -

I also think the fireflies point to a fundamental flaw. I don't believe it should be necessary to render 2500 samples in order to get rid of such an obvious rendering artifact. The notion of unbiased rendering as being unable to produce clean results until a huge number of samples is produced is a different notion than unable to produce accurate results until a huge number of samples is produced.

Let me clarify:

Unbiased rendering needs thousands of samples per pixel for accuracy - I agree.

Unabiased rendering needs thousands of samples per pixel to avoid artifacts - I disagree.

I think they have something wrong. If not that, then I think they have been thinking with too narrow a mindset. I think that a clean image should be possible in 50 samples no matter what in the kinds of images I've been doing. There is no refraction or caustic effect, and all light sources are large. With the bidir path integrator, it is easy as pie to find paths from camera to light source, and after 50 such paths, every pixel should be within 10% of its final accurate value.

When I have time, I will look into this problem.

the fireflies problems are bigger then some here are aware.

when you have 2-3 objects with glossy reflections then what can happen and sometimes happen is that the longer you render the more fireflies you get. so basicly what happens is that you dont get a better render with more time but more artifacts.

i have been readign some on google and the creators are aware of the problem but i think they dont know how to fix it. it is free so i can not complain.