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In page Wim Wenders:

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Wenders's career began in the late 1960s, the New German Cinema era.[1] Much of the distinctive cinematography in his movies is the result of a long-term collaboration with Dutch cinematographer Robby Müller.[2][3][4][5] Wenders made his directorial film debut with Summer in the City (1970), his graduation project at the University of Television and Film Munich, which he attended from 1967 to 1970. Shot in 16 mm black-and-white by Müller, the movie exhibited many of Wenders's later trademark themes of aimless searching, running from invisible demons, and persistent wandering toward an indeterminate goal. Protagonist Hans (Zischler) is released from prison, and after searching through seedy West German streets and bars, he visits an old friend in Berlin.[citation needed]