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For the first time, a renderer provides only one sampling control for all the lighting components: specular, diffuse and light. By adjusting only one "Shading Samples" value, the artist can reduce noise without having to fiddle around with per-material or per-component sampling. 3Delight uses space varying heuristics to select the best element to sample (specular, diffuse, light) by respecting to the total allotted rays budget..
For the anti-aliasing component, 3Delight provides a non-multiplicative "PixelSamples" control. This control is detached from the "Shading Samples" parameter so that artists can control shading quality and anti-aliasing quality independently.
The following simple renders illustre how "Shading Samples" control the various lighting elements all at once.