256000 samples and...

[FabioHartmannFernandes]

After 256000 samples and the result is:



Working with lights in octane is just a waist of time, money and energy.

Render all night with four titans and looks like that... how many GPU´s will it take to make a simple image with lights?

[Lewis]

Well it really is a bit grainy ad you are right when concluding that octane don't like too much lights. I wish OTOY guys do somethign for lights to make them behave better and octane to handle more lights easier (My current scene has 3000+ IES lights but in no way i could throw all that on Octane) but there is some tricks to make them clean faster so you might try to add more samples just to light and/od use hot pixel remover etc. etc.

[FabioHartmannFernandes]

Well i have 140 lights in the scene (only octane lights) and i am using 1000 samples for each...
Tried hot pixel removal, direct light, path tracing, and PMC... nothing works...
Thanks anyway

[aoktar]

Well i have 140 lights in the scene (only octane lights) and i am using 1000 samples for each...
Tried hot pixel removal, direct light, path tracing, and PMC... nothing works...
Thanks anyway

is it just this? Hot pixel removal is for fireflys and corrupt the output pixels.
What about coherent ratio, gi_clamp, more samples for lights, tweaking light geometry, etc?

[FabioHartmannFernandes]

Tested coherent ratio, from 0 to 1, gi clamp variations, more samples for lights (10.000) and the geometry is simple spheres and disks (default octane light).

[FabioHartmannFernandes]

After tweaking:
5000 sampes

Without the glass, grass, furniture, etc...

[coilbook]

I agree. Small lights are a problem. I wish we can get at least fake lights option where it will light up an area around the light without contributing to the scene like default max lights fast and noise free.

[Olitech]

Don't even bother with Octane Lights.

Just use emitters or emitter bulbs (cubes).

You can crank emitter texture samples way, way higher than the lights...like 100k plus.

best,
O

[RobSteady]

Can you share the scene so we can have a look? Only the stuff from the second image...

[FabioHartmannFernandes]

Olitech nailed it

Use of circular emitters is far better than Octane lights...

I think that still there is a lot o space for improvement, but works better, thats for sure...

And i agree with you Coilbook, maybe faking it its a faster response to minimize the problem, until a creation of a better solution.

Thanks a lot Olitech for the tip.