Steina (b. 1940, Reykjavík) and Woody Vasulka (b. 1937, Brno) are central figures in the history of video art. They were among the first artists to show interest in the medium in the late 1960s, when the first commercial video camera (Sony Portapak) became available. Their body of work – together and individually – spans analogue and digital investigations of the materiality of the video signal, optical machine installations and performance.