I don’t know the answer to this question so I would have to look it up. You seem to be really clever and really good at science though so maybe you could help me and katiex out?
Can I set you a challenge? Why don’t you see if you can find out how light travels through a camera, and post the answer here in the comments for me and katiex. I’ll be really impressed if you post the answer before the other scientists get round to answering your question.