Recently I was watching a short film titled "Black Hole". In the credits following I came across one "Purva Desai" being credited under D.O.P (i.e. Director of Photography), only to be followed by two other people being credited as Cinematographers.
My question is,
Is there any real difference between Director of Photography and Cinematographer or are they just two fancy terms for someone who "paints with light" (as Roger Deakins once said)? If so, what is it?