Really noisy scenes after Octane 3 update

Fri May 27, 2016 3:01 am

Before updating to octane 3 this scene would be quite clean at a high max. samples value with the PMC kernel (something like 5000 - 8000), however now it's incredibly noisy, with all of the same settings and everything.

Is there any way to fix this?

Beppe OctaneRender™ Italia Blue Sky · Fri May 27, 2016 8:47 am

Hi jabbathekid,
weird, but I guess you have posted twice the same v3 result, correct?
I cannot reproduce this behavior with my scenes

Could you share the scene or a part of it that shows the same behavior?
ciao beppe

Fri May 27, 2016 11:09 am

Check the inverse absorption - it's caught me out on a couple of scenes where the colours flipped.

cheers
brasc

Fri May 27, 2016 1:48 pm

bepeg4d wrote:Hi jabbathekid,
weird, but I guess you have posted twice the same v3 result, correct?
I cannot reproduce this behavior with my scenes
Could you share the scene or a part of it that shows the same behavior?
ciao beppe

yeah i did sorry, just wanted to make sure it was definitely in the post lol.

I've attached a very stripped down version of the screenshot i sent in my first post. The scene is set up INSIDE a cube, so its a very dark scene. I assume it's to do with octane not having enough light to bounce around, leaving a lot of noise behind. The only frustration I'm feeling here is the fact that this didn't happen with the previous version of octane, I was just able to set the max. samples really high and the noise would eventually go away in v2, so I'm kind of at a loss trying to figure out what changes that came in v3 caused this kind of problem.

https://www.dropbox.com/s/txqirkd6gznxq ... e.c4d?dl=0

Let me know if you can help at all. I would really appreciate it

- jas

Beppe OctaneRender™ Italia Blue Sky · Tue May 31, 2016 9:05 am

I Jas,
thanks for the scene, now I can see the difference

I'm currently testing but I need some time because of the particular set up and long rendering time.
brasco is right about inverse adsorption since the node is changed in v3, but in this case seems something different

I'll let you know

ciao beppe

Tue May 31, 2016 10:05 am

I don't know your scene needs but try to optimize with Diffuse samples down

Sat Jun 04, 2016 2:13 pm

valters wrote:I don't know your scene needs but try to optimize with Diffuse samples down

Well that seems to have fixed it, thanks heaps!! Those settings never made any *pleasing* difference on my scenes in V2 so I ended up letting them fly over my head after a while.

Really appreciate the help everyone gave me