Filming took place in various locations, including inside the apartment that Cassavetes shared with his wife Gena Rowlands, and on the streets of New York. Using a 16 mm camera borrowed from Shirley Clarke, and monochrome film stock, Kullmar was forced to shoot scenes in which the actors could move in any direction they wished, making for unpredictable zoom and focus requirements. No filming permits were obtained, so the cast and crew were necessarily ready to pack quickly and leave a location. The lighting was a general wash rather than specific effects. The microphone was placed by Jay Crecco (who was also an actor in the film), and dialogue was recorded to tape with street noises intruding. Even though Cassavetes said "print it!" after he was satisfied with a scene, there was nobody on the crew keeping track of the film takes, so all of the exposed film had to be printed. The editing of the film was made much more difficult by the lack of notes taken during shooting, and by the sound recorded "wild" on tape, not synchronized with the film. The microphone failed to pick up some of the dialogue, requiring lip-readers to watch the footage and write down what had been said so that the actors could re-record their dialogue. Editors Len Appelson, Maurice McEndree and Wray Bevins began work while shooting was still under way, editing the film in an office next door to the Variety Arts Theatre, the office that is seen hosting a rock 'n roll party in the film. Primary photography was finished by mid-May 1957, with of film exposed, but the editing took more than a year. Cassavetes was not available during much of this time; starting in June, he was on location working as an actor first in "Saddle the Wind", then in "Virgin Island" (both 1958). At the end of 1957, the editors moved to a professional editing suite to complete the task.