This clip from The Departed uses a couple different aspects of cinematography. First of all, the lighting in each place is different. With Billy Costigan at the airport, the director uses high key lighting to show the entire background in the distance. With Sargent Dignam in the office the director uses low-key lighting to emphasize Dignam's attitude toward Costigan. Another thing that shows this is the close up of Dignam in the shadowy room. At the airport they used mostly a medium shot so we could see the entire distant background.