DOF + Anistropy Bokeh + MB: noise killer ?

V-Ray V-Ray for 3ds Max Issues
1

Hi there,

- I am using VrayPhys Cam, plus DOF, Bokeh and MB.
- I don’t use GI, just a few simple vray lights with hdr maps.
- cam is animated, objects are animated.

And I realize that noise is all over the place - especially in the glossy reflections.
I know that the hdr maps in the lights are resulting in extreme noisy shadows, but even if I am getting rid of them and if I crank up the noise threshold.
All that doesn’t really help, and I don’t want to bang the render time into the nirvana.

I know that we had already many threads about noise and flicker issues.
But I never found anything specific for that combination.

So what are your thoughts when using physCam, DOF, Beokeh and MB in 3d ?
How do you deal with that to be noise free ?

thx for any thoughts and hints !

2

Hard to explain, cracnk up ur lights samples to 96 and AA to 4/10 and that should fix the issue. Also put 48 for material samples…

U also need to up sampling for mb/dof and beokeh

3

Can you show some images?

Best regards,
Vlado

4

image

this is just a crop showing the reflection dots on the metal shader - dof, bokeh, mb turned off.
it’s just happening in the reflection pass - glossy reflections.

adding DOF and MB will blur it a bit, but the noise/flicker is still there.
glossy reflection samples are already set to 64, light samples 32.

adaptive dmc: min 1 / max 4
adaptive amount: 0.4
noise threshold: 0.005
min samples: 16
global subdivs multiplier: 1

need a strong coffee… lol;

5

Get rid of the sharpening filter for starters, that greatly exegarates both noise and the dots. 1/4 seems pretty low, so does adaptive amount.

Regards,
Thorsen

6

Could you please attach a sample scene - we will try to help you.

7

sample scene would be to heavy … please let me know your email and I’ll see what I can do.. thx, highly appreciated !

@instinct:
thank you !

8

adaptive dmc: min 3 / max 6

and problem solved. - more or less