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Though film noir is often identified with a visual style, unconventional within a Hollywood context, that emphasizes low-key lighting and unbalanced compositions, films commonly identified as noir evidence a variety of visual approaches, including ones that fit comfortably within the Hollywood mainstream. Film noir similarly embraces a variety of genres, from the gangster film to the police procedural to the gothic romance to the social problem picture—any example of which from the 1940s and 1950s, now seen as noir's classical era, was likely to be described as a melodrama at the time.