This film, being shown as part of the Buster Keaton season, also screens on February 20th. You can find all the details here.
Chicago Reader review:
Buster Keaton's 1928 film on the problems and principles of making movies. Directed by Edward Sedgwick, the film follows the adventures of Keaton as he tries to become a cameraman for the Hearst newsreel company, and it includes some of the best asides on the techniques and psychology of shooting films ever captured in a movie. In many ways it summarizes Keaton's career and makes a marvelous companion piece to his other film-about-film, Sherlock Jr.
Here (and above) is an extract.