Noisy reflection from texture emmision

[atoyuser1]

Hi, I've found a few post on this subject, but not a straight forward solution.

I have this render at 1000 samples, but the reflection is still noisy:

1000 samples

Aside from adaptive sampling etc, is there something I'm missing? I tried upping the sampling rate on the emission texture, but that doesn't seem to help:

emission texture settings

[elsksa]

Hi there, proper sampling is primarily what should be correctly set, according to the scene. Light Sample Rate ≠ Light Samples.
This page does cover most of the important settings and could help: https://www.elsksa.me/scientia/cgi-offl ... r-settings

[atoyuser1]

Hi there, proper sampling is primarily what should be correctly set, according to the scene. Light Sample Rate ≠ Light Samples.
This page does cover most of the important settings and could help: https://www.elsksa.me/scientia/cgi-offl ... r-settings

thanks for the link, I had a read through it but couldn't see anything directly linked to my problem, but I will have another look

[whersmy]

If you are on c4d and are able to export an .orbx, i can take a look at the kernel and settings

[atoyuser1]

I cannot export orbx, but here's the C4D file. It's R24

test.c4d.zip

(82.54 KiB) Downloaded 86 times

test.c4d.zip

(82.54 KiB) Downloaded 86 times

[whersmy]

I thought it was possible to export to .orbx with c4d.

https://www.youtube.com/watch?v=zzlPI68RRW0 here it`s explained!

[atoyuser1]

Ok I simplified it as much as possible, thanks!

test2.orbx

orbx

(64.86 KiB) Downloaded 102 times

render

[elsksa]

Hello atoyuser1,

thanks for the link, I had a read through it but couldn't see anything directly linked to my problem, but I will have another look

The information you are after is available in both my "article" and the official OTOY Octane documentation.

I have made some simple changes to the scene. Feel free to look into it, I have attached an ORBX file.

• I have made some subtle changes to the PT Kernel,
• I have changed the light's color node to GaussianSpectrum, being recommended in some cases (more information in the official documentation).
• For the sake of this test, I am using Filmic OCIO since having a display rendering transform is mandatory (https://www.elsksa.me/scientia/cgi-offl ... rvival-kit). It might render black. It can be set back to default, in the Camera Imager, or the Filmic OCIO can be loaded in the Octane's preferences, to match my scene 1:1.
• I am getting an acceptable result at 512 samples instead of 1000 and without a hardcore GI Clamping of 1. The Camera Imager's "Hot Pixel Removal" can be used at a "fair" value (ranging from .4 to .6 for instance).

I have limited myself to the original provided scene file. If that was me, I would have approached the scene differently (in regard to lighting, shading and "color management").

atoyuser1_light_color_sampling_elsksa.orbx

(52.73 KiB) Downloaded 92 times

[atoyuser1]

Thanks elsksa. You Obviously know your stuff. Looks like I have a lot of reading to do!