[davidmanze]

No, it is an "IR" and/or UV problem (flowers do have those colours to attract insects). How can one tell, easily? As it is only with flowers that this problem occurs. Put the same colour (according to your eyes) next to the flower, but of man made material, and you see the difference. So, not a colour management problem.

 

By the way, older digital cameras struggled much more than the ones I have now.

This is in my view "not a just mother nature" caused problem, Ferrari's solid block red paint has no intentional UV/IR insect attracting properties that I am aware of, but when you stick the pointer on a nice expensive sunlit 400 series Ferrari, the red band figure still rockets up to 255 and then some!

 My "flower" example was simply because I want to resolve the detail in the red petals, whereas I'm not really too fussed about the molecular structure of  Ferrari's paintwork!