Sound effects for punches landing were made by squashing melons and tomatoes. Sound effects for camera flashes going off were sounds of gunshots. The original tapes were deliberately destroyed by the sound technicians, to prevent then being used again.

Sound effects for punches landing were made by squashing melons and tomatoes. Sound effects for camera flashes going off were sounds of gunshots. The original tapes were deliberately destroyed by the sound technicians, to prevent then being used again.

(Source: filmtrivia, via darrenaronofskys)