I understand the contrast equalizer module and wavelets (also found in the retouch module), so I’m trying to apply this knowledge to the diffuse/sharpen module. This is what the manual says:
"Scale: Here, we fast-track things a bit to save time and reuse the multi-scale wavelets scheme from the contrast equalizer module, so that we can diffuse at different scales. The maximal scale of diffusion is defined by the radius span parameter.
Regardless of the diffusion, a sharpness parameter allows you to increase or decrease the details at each scale, much like the spline controls of the contrast equalizer. Along with the edge sensitivity slider, this provides the same features as the contrast equalizer module (luma and edges tabs) but in a scene-referred RGB space."
As the manual indicates, the same features as the contrast equalizer module should be available in the diffuse and sharpen module, but I’m having trouble finding the equivalents.
Specifically, I want to find the equivalents for the 6 nodes on the Luma section of the contrast equalizer, with the far left one acting on the coarsest wavelet scale, and the far right acting on the finest wavelet scale. Or, if we use the retouch module as an example, I’m looking for the equivalent of creating x number of scales using wavelet decompose.
On the one hand, the “speed” sliders in the D&S module work on the different scales (low frequency and high frequency); and on the other hand, the manual text above says that the “radius span” parameter defines the maximal scale, and the sharpness parameter increases or decreases the details at each scale.
It’s all a bit baffling as to how we can recreate the nodes on the contrast equalizer in the D&S module.
I have experimented a lot, and although I have managed to produce the effects I want, it hasn’t got me any closer to really understanding the module and applying my knowledge of wavelets to the module.
Is the “radius span” slider analogous to the central line of the contrast eq module? And different settings along that slider would create nodes similar to the contrast equalizer? And if so, where do the speed, sharpness, and central radius sliders come into the equation?
I know many of you just use the presets, but my interest here is more about properly understanding the module rather than just getting the effects I want. To make things simple, can anyone explain how they would go about creating the far left contrast eq luma node and far right one? (I can fill in the rest 
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