In theater, film, and television, actors, models, singers, and other entertainers are often required to include a head shot, along with their résumé, when applying for a job. Those head shots are intended for helping them land a career, an actor headshot should help casting directors understand the person exactly as he or she is (ie. age group & ethnic background), while the actor hopes that the headshot will inspire the casting director to hire him or her. Head shots often feature the actor or actress facing off-center. A performer will often have head shots expressing different poses and expressions to give a potential employer an idea of the subject's range of appearances or expressions. These types of head shots are called "looks". It is common for an actor to have different head shots for different roles, but for the most part these consist of a change in attire. The head shots that include a person's shoulders are called "three-quarter" shots. Previously, head shots were often in black-and-white; however, most head shots are now taken in color.