A hermetically sealed space and a firearm are the two components of the cause and effect relationship that creates the image. I placed light-sensitive paper in the dark part of the space and I shoot through its front wall. The exposure occurs in the moment of the shooting, its subject is the mere act which creates the photograph and that is a man firing an arm. The bullet pierces the photographic paper too and leaves a strong indexical mark, carrying the cause of the exposure as a wound.