The Lighting & Electric Department
A strong DP will usually choose the look he wants after discussing it with the director in private. He will relay this to his crew, who, if they are dedicated and competent can then find that look without any further input from the DP. This may seem counterintuitive, but the DP is after all the Director of Photography, and his job is to direct the crew, not micromanage them. An efficient camera operator will know what lenses to use to achieve the DPs frame. And a good lighting department will know what type of lights and where to place them without having to ask the DP, who should be more focused on the bigger, creative picture.