What are the man and woman doing?

M: Did you take these pictures? They are very good.
W: Yes, I think they turned out well too. I like to take my camera with me wherever I go. That way if I see something interesting I can snap a picture of it.
M: Carrying a big camera round is too troublesome for me.
W: My camera is really small though. Let me show you.
M: That is a compact camera. But you really must know a lot about photography?

M: My car is in the repair shop again.
W: Maybe you should consider trading it in for a new one.