Just to be clear: DNG specification includes an IDT in metadata. This IDT consists of two sets of 3x3 matrices (for dual illuminant colour profile) plus a set of Hue Saturation data map table (ProfileHueSatMapData1 and ProfileHueSatMapData2).
The Hue/Sat Map is non-linear transform to map super saturated colours, which are not accurately mapped using linear (3x3 matrix) transforms.
It appears that Resolve does not use ProfileHueSatMapData, which results in incorrect mappring of saturated values and it is not compliant with the specification.
Can you please confirm this is the case?
What would be useful is to be able to turn the ProfileHueSatMapData on and off (for performance reasons).
Pawel Achtel ACS B.Eng.(Hons) M.Sc. “Sharp to the Edge”