Grainy/noisy Shadow Pass & Motion Blur

Maxon Cinema 4D (Export script developed by abstrax, Integrated Plugin developed by aoktar)

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Ferdinand13
Licensed Customer
Posts: 154
Joined: Sun Apr 03, 2016 4:21 pm
Location: United Kingdom

Hi guys,

I hope you're all well.

I've been running into trouble lately, rendering some animations out of Octane in Cinema 4D, using the Pathtracing Kernel.

As you can see from the image below, the shadow pass shows substantial grain on the floor and on the motion-blurred edge.
NoisyShadows&MB.jpg
I started out with 2000 samples and Adaptive Sampling enabled, but even at 10,000 samples and Adaptive Sampling turned off, there's only marginal improvement to the noise/grain on the floor and almost no improvement to the motion-blurred edge at all.

The reason I'm so reliant on the shadow pass, is that I'll be comping the animation onto changing background/floor patterns in After Effects and the moment I do that, the grain really shows up. Using Neat Video in AE helps somewhat in reducing the noise on the floor, but it is hit and miss and the grainy motion blur isn't affected at all.

Am I missing something very obvious? Is there a setting to ask Octane to focus more samples on the motion blur or the shadow pass?

Thanks for your input.
Custom PC, Intel Core i7-6800K, 48GB RAM, 3x MSI GeForce RTX 2080 Super Seahawk EK, Windows 10
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Ferdinand13
Licensed Customer
Posts: 154
Joined: Sun Apr 03, 2016 4:21 pm
Location: United Kingdom

Just a quick bump. Any ideas anyone? I’d be glad about any hints regarding that shadow pass noise issue.
Custom PC, Intel Core i7-6800K, 48GB RAM, 3x MSI GeForce RTX 2080 Super Seahawk EK, Windows 10
Razer Blade Pro 17, Intel Core i7-10875H, 32GB RAM, 1x NVIDIA GeForce RTX 3080, 1x EVGA GeForce GTX 1080 Ti Hybrid (eGPU), Windows 10
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