The perspective of auteurism also led to a series of studies of actors-stars as auteurs, namely performers who had an unusual control over their careers and screen images.
The scholar Richard Dyer proposed a classification of movie stars along the following dimensions:
1. Actors who totally controlled their image, such as Fred Astaire or Joan Crawford.
2. Actors who contributed actively to their persona, such as Marlene Dietrich and Robert Mitchum.
3. Actors who were just one disparate voice among others in their image construction, such as Marilyn Monroe.
4. Actors who were totally the product of the studio machine, such as Lana Turner.
The extent of power movie stars possess and how they execrise their power can be determined by deconstructing them as auteurs of their films. Some stars scripted or directed themselves in films, like Charlie Chaplin, Buster Keaton, Mae West, Jerry Lewis, John Wayne, Clint Eastwood. However, stars serving as just one force in their film has been more common, since that voice is not limited to matters of performance and costume but may also affect other aspects of filmmaking.
In his book, James Cagney, The Actor as Auteur, Patrick McGilligan wishes to demonstrate that Cagney was the author of his films. According to McGilligan, under certain circumstances, an actor may influence a film as much as a writer, director, or producer. Some actors are more influential than others, and there are few performers whose acting capabilities and screen personas are so powerful that they embody and define the very essence of their films. If actors are responsible only for acting, but are not involved in other artistic decisions, then they are more of passive icons, manipulated by writers and directors. But actors who influence artistic decisions (casting, writing, directing) and demand certain limitations on the basis of their screen personas may be regarded as "auteurs." When actors become so important to a production as to change lines, shift meaning, influence the narrative, and signify something clear-cut to audiences, despite the intent of writers and directors, then their acting assumes the force and integrity of an auteur.
For McGilligan, Cagney's films made with Lloyd Bacon, William Keighley, Roy Del Ruth are all similar to each other, and more like Cagney's other films, than films by those directors with different stars. But McGilligan doesn't provide the specific aspects of Cagney's performance, character, and narrative structure, and his statements are vague. He singles out one quality of these directors' films, such as "spontaneity" (a characteristic of Bacon), "a polished emphasis on action and dialogue" (Keighley), and "urbanity" (Del Ruth).
In Sex In The Movies, the critic and scholar Alexander Walker examines the various forces in the production of Greta Garbo, arguing for a model of which Garbo was only one out of many factors. Garbo had certain given features, her appearance (feminine face, masculine body) spiritual face, and pessimistic temper. But there were collaborators in the total effect, particularly Mauritz Stiller, who gave her the name Garbo (meaning "wood nymph" in Swedish), and Willian Daniels. Stiller discovered her in Stockholm and shaped her performance style in line with his own idea of her. And Daniels was Garbo's lighting cameraman on all but two of her sound films.
The construction of Garbo's image took place within the elaborate but specific system of the MGM studio, where Garbo had huge battles over the quality of her scripts.
In my book, John Wayne and the American Way of Life, I showed that Wayne was a powerful creative influence on most of his movies after John Ford's Stagecoach, and particularly after Howard Hawks's Red River. Wayne's carefully planned theatrical entrance sets the tone for the entire movie, and his distinctive voice and delivery, cold eyes, and ironic smile shaped the meaning of his films as much as the written scripts. In the last two decades of his career, Wayne became the auteur of his films, which expressed his own vision of life rather than that of the screenwriter or director he worked with.
Since Hollywood has always emphasized "movie stars" above other elements–especially in the 1930s and 1940s during the Golden Age of the studio system–for Dyer, the study of movie stars as authors belongs to the study of the Hollywood production system itself. It is possible to establish continuities and transformations either in the totality of a star's image, or in discrete elements such as costume, acting style, screen roles, and iconography. But continuity in stars' public image does not necessarily prove that they are responsible for it. Who is responsible, and to what extent they are responsible for the continuities in Marilyn Monroe's screen image. The star herself, or the studio's publicity machine, trying to satisfy public's expectations.