Spielberg wanted a moodier film noir lighting style like in "The Informer" (1935). Slocombe wanted to make things brighter and used backlighting to create a greater depth of field; Spielberg preferred his changes. Slocombe often employed natural light, using solar position predictions to plot a scene's layout. Spielberg liked the beams of sunlight glimpsed through scenery and tasked special effects artist Kit West with using a smoke machine to create artificial sunlight shards. For the bar fight, Spielberg wanted pitch-black shadows on the wall, but the lighting required to achieve this would have shrouded the actors' eyes; he settled for subtler shadings. He also wanted to illuminate the Well of Souls with a lighting effect through the ceiling opening, but once this was sealed it no longer made sense. The flaming torches used in the scene did not provide enough light, so he opted to use an artificial light source. Spielberg noted Allen always looked beautiful in her scenes because Slocombe would spend twice as long setting up her lighting as he would Ford's.