Hah. I just sent myself th e following message. My brane does hurt.
Thank YOU. I tend to read only books that people I respect say they enjoy, so the reading thread here supplies a few, or books that grab me from the library shelves. The first 2 of yours sound good to me.
I'm going to give you the back-of-the-envelope-summary. Remembering that this is fiction, one of the characters talks about how film stock was developed (no pun intended) it "was optimised for white North-west European skins." and that makes images of other skins ... not quite right. She suggests that differing photographic design would make "blackness ... look ordinary, whiteness ... look odd."
She talks about how sweaty Sydney Poitier was in In the Heat of the Night. It was at least partially because the lights were turned up full blast, because the cameras didn't "see" his skin. Metaphorical, huh?
Cheers
Underseer