This is based heavily on @Thomas_Mansencal’s excellent work, and is frankly just a minor tweak on his views of the data.
There has been quite a discussion about “data” with respect to cameras and their capturing. I thought it would be informative to plot the camera’s native response to the spectral locus with respect to how the values end up after processing via a naive set of three virtual camera primaries.
As we can see, the idea that the camera captures “data” is only relative to the constrained selection roughly around the solved set of swatches in question, and even then, it deviates. This seems like an unavoidable subject when determining a parametric or otherwise approach to gamut mapping, as the procedure would inevitably be mapping non-data.
Although the spectral responses are varied, the overall trends are perhaps striking.
I hope someone finds this animation useful. The sources are located here via a Colab.