The plot was inspired by Julio Cortázar 's short story , " Las babas del diablo " or " The Devil 's Drool " ( 1959 ) , translated also as " Blow Up " in '' Blow-up and Other Stories '' , in turn based on a story told to Cortázar by photographer Sergio Larraín , and by the life of Swinging London photographer David Bailey . The film 's non-diegetic music was scored by jazz pianist Herbie Hancock . In the main competition section of the Cannes Film Festival , '' Blowup '' won the Grand Prix du Festival International du Film , the festival 's highest honour
Cannes Film Festival
1967 Cannes Film Festival
Blowup