Auteur theory describes directors who have a unique and distinctive style that shines through even when making films as part of a large production or studio system. Some key aspects of auteur theory include a director prioritizing their creative vision and artistic merit over commercial success. Famous auteur directors like Luc Besson and Quentin Tarantino are known for their signature styles and for referencing their past works. Their films have non-conventional narratives and stylistic choices that subvert genre expectations. In contrast, directors like Sam Mendes who make James Bond films focus on adhering to genre conventions to ensure commercial success of a popular franchise.