Hi,
Trying, trying and trying and always noise in light !
Attached WIP if someone can help me.
I tried Pathtracing and PBR but it's with Directlighting i've low noise... but still too !
Yesterday, i'm happy because i bought Titan X in addition to my GTX 980 and I realize to work well with Octane i must be at least 6 Titan X.
Too disappointed !
Thanks in advance
NOISE !!!!
Moderator: juanjgon
The directlighting kernel should work fine for this kind of scenes. Try to set the diffuse depth to only 2 or 3 bounces.
The light sources, and emission nodes, have a parameter "sampling rate" that you can use to add more samples to the small lights. Try to set the sampling rate of the lamp to 3 or 4.
-Juanjo
The light sources, and emission nodes, have a parameter "sampling rate" that you can use to add more samples to the small lights. Try to set the sampling rate of the lamp to 3 or 4.
-Juanjo
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3dreamstudios
- Posts: 479
- Joined: Fri Apr 03, 2015 8:55 pm
Yea I think your looking great.....just up the sampling for those lights that your still seeing noise on. It's kind of a weird thing.....some lights wont get as even a look until you up the samples in that small area. And even though your in essence taking away processing from other areas they are already very clean and don't need further refinement.
I will sometimes bump up the samples to crazy levels...like 100, 1000, and 5000 sometimes depending on the scene and how many lights I'm working with.
As I understand it it's just a priority...so if you need more refinement in one area give that light the highest sample in the scene and just tweak from there. It's a bit of an art to optimize the scene with a lot of lights, but this scene should be no problem! Good luck and looking great!
I will sometimes bump up the samples to crazy levels...like 100, 1000, and 5000 sometimes depending on the scene and how many lights I'm working with.
As I understand it it's just a priority...so if you need more refinement in one area give that light the highest sample in the scene and just tweak from there. It's a bit of an art to optimize the scene with a lot of lights, but this scene should be no problem! Good luck and looking great!
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ThomasVandenAbeele
- Posts: 33
- Joined: Tue Jan 11, 2011 4:31 pm
Brute force rendering and noise: a tricky marriage 
One thing to realise is that extra samples and the noise level have a kind of "perverse" relation regarding rendertime and results:
Say you have a good render, but too noisy, at 1 hour rendertime total.
If you want 50% of that noise level, you need to let it render for 2 hours.
If you want 50% of that noise level still, you need to let it render for 4 hours total.
If you want 50% of that noise leve, it's 8 hours total.
So you see: the longer you let your image render, the longer you need to wait for gains in image quality. That's why you should always try to get a fairly noisefree setup by tweaking the settings, instead of leaving it supernoisy and expecting the extra samples to fix it.
One thing to realise is that extra samples and the noise level have a kind of "perverse" relation regarding rendertime and results:
Say you have a good render, but too noisy, at 1 hour rendertime total.
If you want 50% of that noise level, you need to let it render for 2 hours.
If you want 50% of that noise level still, you need to let it render for 4 hours total.
If you want 50% of that noise leve, it's 8 hours total.
So you see: the longer you let your image render, the longer you need to wait for gains in image quality. That's why you should always try to get a fairly noisefree setup by tweaking the settings, instead of leaving it supernoisy and expecting the extra samples to fix it.