Sis: Hey, uh, so why is it when you look at the sun in a camera it doesn't hurt your eyes?
Me: What? Through a camera lens? That's still-
Sis: No I mean like when it's done and on a screen.
Me: Okay? Like, on TV then?
Sis: Yeah, that. Why doesn't it hurt your eyes?
(
Because it is not a light source. )