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bad noise in render, help please!!!!
Posted: Tue Nov 08, 2016 3:09 pm
by Matteo3d
Hello guys,
I have this scene,
https://www.flickr.com/photos/149043467 ... res/89r45F
16000 path tracing samples, but, super bad noise!
i use light + hdr
how to solve?
Re: bad noise in render, help please!!!!
Posted: Wed Nov 16, 2016 12:52 pm
by nuno1980
"Super"!?? but little noises. lol
Change to PMC kernel for solve.

But may get longer time, sorry.
Re: bad noise in render, help please!!!!
Posted: Fri Nov 18, 2016 2:38 pm
by mib2berlin
Hi, yes PMC help for indoor render.
Set diffuse/specular depth to 6 or lower, check coherent ratio 0.5 need a few hundred sample to clean but render much faster.
Remove the wall in back of the camera or add a big mesh emitter with low value to get more light in the room.
Such an image should be noise free in 2-3000 samples or something is wrong with material/light setup.
Cheers, mib
Re: bad noise in render, help please!!!!
Posted: Fri Nov 18, 2016 4:34 pm
by Matteo3d
thanks to everyone, render very clean, fantastic!
for mib2berlin: check coherent ratio 0.5...
in PMc no coherent ratio, but, diffuse\specular 6-8... very good
Re: bad noise in render, help please!!!!
Posted: Thu Dec 22, 2016 8:21 am
by blackshore
Try to increase the samples on light and render settings for specular and diffuse.
Octane is not 100% unbiased, it uses probabilistic methods for all kernel modes.