urban locations for the city lights' effects on the shots' backgrounds. The crew also embraced fluorescent lighting at other practical locations to maintain an element of reality and to light the prostheses depicting the characters' injuries. On the other hand, Fincher also ensured that scenes were not so strongly lit so the characters' eyes were less visible, citing cinematographer Gordon Willis' technique as the influence. Fight Club was filmed mostly at night, and Fincher filmed the daytime shots in shadowed locations. The crew equipped the bar's basement with inexpensive work lamps to create a background glow. Fincher avoided stylish camerawork when filming early fight scenes in the basement and instead placed the camera in a fixed position. In later fight scenes, Fincher moved the camera from the viewpoint of a distant observer to that of the fighter. The scenes with Tyler were staged to conceal that the character was a mental projection of the unnamed Narrator. Tyler was not filmed in two shots with a group of people, nor was he shown in any over-the-shoulder shots in scenes where Tyler gives the Narrator specific ideas to manipulate him. In scenes before the Narrator meets Tyler, the filmmakers inserted Tyler's presence in single frames for subliminal effect. Tyler appears in the background and out of focus, like a "little devil on the shoulder". Fincher explained the subliminal frames: "Our hero is creating Tyler Durden in his own mind, so at this point he exists only on the periphery of the Narrator's consciousness." While Cronenweth generally rated and exposed the Kodak film stock normally on Fight Club, several other techniques were applied to change its appearance. Flashing was implemented on much of the exterior night photography, the contrast was stretched to be purposely ugly, the print was adjusted to be underexposed, Technicolor's ENR silver retention was used on a select number of prints to increase the density of the blacks, and high-contrast print stocks were chosen to create a "stepped-on" look on the print with a dirty patina. Visual effects Fincher hired visual effects supervisor Kevin Tod Haug, who worked for him on The Game, to create visual effects for Fight Club. Haug assigned the visual effects artists and experts to different facilities that each addressed different types of visual effects: CG modeling, animation, compositing, and scanning. Haug explained, "We selected the best people for each aspect of the effects work, then