Recently on a wildlife photography course, the leader asserted that using aRGB in the camera settings meant less loss of data in the RAW file than if sRGB were used. As I did not understand this I checked on the web, finding flatly contradictory views. Eventually, I found this question which seemed to be THE definitive answer. Then investigating the EXIF contents of some of my recent shots, taken on a Nikon camera, I found that the choice of colour space was stored in the RAW file.
So my questions are:
Is the colour space stored in the RAW file?
If it is stored, is it true that using sRGB causes information to be lost, compared to using aRGB?
If it is stored, why does it not matter which you choose (as far as the RAW file is concerned)?
If it is not stored, why is the choice stored in the EXIF data?
I am aware that choice of colour space is relevant at the point at which the NEF file is converted, but my question is specific to the RAW file only.