![]() To get access to the noisy image go to the view layer properties > Passes > Data and enable Denoising Data. Note that even if we enable render setting denoising we can still access the noisy pass by enabling the denoise data pass. For the best quality denoise use OpenImageDenoise.For a quick denoise if you're using a Nvidia card set the denoiser to Optix.In Render Properties > Sampling > Render Enable Denoise if it isn't enabled.How to denoise using the render settings? We can just exclude the denoise node for that render layer. This method also works for elements that look better before denoising. When we set a collection to holdout it will make all the objects in the collection transparent and also make everything behind it transparent. In case we're having issues the way the view layers work is that each view layers saves the setting for collections separately. Next to ViewLayer click add view layer and select the new view layer from the dropdown. Once we've setup the separate collections go to the top right of the window. The process for separating these elements is a little complicated but first separate the different elements into their own collection. Related content: How to use alpha transparent textures in Blender ![]() Since we're using the compositor, we can do a bit of customization to make the denoiser produce better results in these cases.Ī quick fix for this is to separate those elements before the denoise, denoise them separately and then recombine them. Transparent objects usually end up having a lot of artifacts as well when combined with denoising. Slightly transparent objects tend to make whatever is behind them look blurry. ![]() Optix does not have this post processing option. The reason for this is that the denoiser node uses OpenImageDenoise. You may notice that the compositor denoiser doesn't give us the option to choose which denoiser to use. The Albedo and Normal passes will just help the denoiser produce a better quality image. The denoiser will work on images even if we don't have the Normal and Albedo pass.
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