The Collaborative International Dictionary of English v.0.48:

Cinematographer \Cin`e*ma*tog"ra*pher\, n.
   1. One who takes motion pictures with a movie camera,
      especially one expert in the art.
      [Webster 1913 Suppl.]

   2. one who exhibits motion pictures; an operator of a motion
      picture projector; a projectionist.
      [Webster 1913 Suppl.] -- Cin`e*mat`o*graph"ic, a. --
      Cin`e*mat`o*graph"ic*al*ly, adv.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

cinematographer
    n 1: a photographer who operates a movie camera [syn:
         cameraman, camera operator, cinematographer]