Render object and shadow with alpha

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

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Koler
Licensed Customer
Posts: 6
Joined: Fri Jul 28, 2017 12:00 pm

Hi everyone!

I'm facing an issue that I can't seem to solve — maybe someone has encountered a similar problem.

I have an interior scene, and I need to render a chair with an alpha channel and the shadow it casts on the floor. I tried doing this using Render Layers and AOV Groups, but the result I’m getting this way is very noisy, differs in exposure, and the shadows I get through "Black Layer Shadows" appear across the entire frame rather than just on the floor.

I also tried using a Shadow Catcher, but it doesn’t work well for interiors.

I’d really appreciate any help! I’ve attached the scene I’m experimenting with.

Thanks in advance!

scene link https://we.tl/t-GPC7A96eEo
Attachments
output_AOV
output_AOV
Last edited by Koler on Thu Mar 20, 2025 7:32 am, edited 1 time in total.
jayroth2020
OctaneRender Team
Posts: 486
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Cannot open this archive...
Puget Systems / Intel Core Z790 ATX / RTX 4090 / Cinema 4D
skientia
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When rendering "normally" and checking "sampling noise" via AOVs (direct and indirect), is it identical to the "noisy" screen grab attached?
If yes, it would mean that the kernel sampling have not been "optimized", in which case this guide could come handy.
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Koler
Licensed Customer
Posts: 6
Joined: Fri Jul 28, 2017 12:00 pm

jayroth2020 wrote:Cannot open this archive...
try this, pls
https://we.tl/t-GPC7A96eEo
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