Watch CineCalidad. Cut down to 16mm from a 35mm trailer for the movie Shaft, the slowed down voice, gunshot explosions and lsaac Hayes' iconic music become barely recognisable and monstrous. The arbitrary framing provides glimpses of the edges of faces, fleeting urban scenes, partial text, all rendered in cyan negative in a kind of psycho-dramatic abstraction, all the more unsettling than Gordon Parks's originating gangster populated dystopia. It is a reminder of how, by simply repositioning the frame, extant material can be transformed.