Raw Deal -- Anthony Mann (1948) -- A film about people destroyed by their virtues, not their vices. Mann at his finest, and Alton right there with him. This image links to an excellent essay on the film.
Raw Deal -- Anthony Mann 1948 -- one of the great sequences in film noire. A lot of good cinematographers were working on low-key lighting before Alton (Greg Tolland, Stanley Cortez, for example), but it is Alton's work that typifies the style referred to as noire.