Denoised pass + Alpha = different result

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

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KeeWe
Licensed Customer
Posts: 297
Joined: Wed Nov 27, 2013 11:32 am

Can someone explain me why I am getting different results when using the AI denoiser with an alpha? Attached you can see the the 2 seperatley rendere layers, the teeth are the denoised pass, having a jaggy alpha. The rendered beauty of the teeth with noise works fine.

Also: why do I have to set the alpha to unmultiplied for the denoised pass while the beauty just works fine with slpha set to straight?

Isn't there a way to just render one denoised beauty pass instead of the noisey beauty AND the denoised pass?
Attachments
render settings 2.JPG
render settings.JPG
alpha problems AI denoiser.JPG
6850k // 32 GB // 1080, 1080 Ti, 2080 Ti // Win 10 // C4D 19.068
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