In July 2006, the film trade press reported Miller would write and direct the film adaptation for "The Spirit" ; Miller and the producers publicly announced this at the 2006 Comic-Con International in San Diego, California. Miller said that he was putting together a film treatment that included large parts of "The Spirit" strip panels. As Miller described the project, "I intend to be extremely faithful to the heart and soul of the material, but it won't be nostalgic. It will be much scarier than people expect". Miller filmed "The Spirit" using the same digital background technology that was used for "Sin City" and "300". The film would also copy specific shots from the comic, similar to "Sin City".