Luis Buñuel of stones with which to pelt anticipated hecklers. After the premiere, Buñuel and Dalí were granted formal admittance to the tight-knit community of Surrealists, led by poet André Breton. Late in 1929, on the strength of "Un Chien Andalou", Buñuel and Dalí were commissioned to make another short film by Marie-Laurie and Charles de Noailles, owners of a private cinema on the Place des États-Unis and financial supporters of productions by Jacques Manuel, Man Ray and Pierre Chenal. At first, the intent was that the new film be around the same length as "Un Chien", only this time with sound.
Un Chien Andalou defined Surrealism as "Psychic Automatism", unconscious, capable of returning to the mind its true functions, beyond any form of control by reason, morality or aesthetics." The film was financed by Buñuel's mother, and shot in Le Havre and Paris at the Billancourt Studios over a period of 10 days in March 1928. It is a black and white, 35mm, silent film, with a running time of 17 minutes, although some sources state 24 minutes, and a physical length of 430 meters. For many years (and still), published and unpublished reports have circulated that Buñuel had used a dead pig's eye,