11 actresses who shaved their heads for a role

Screen test. A screen test is a filmed audition where an actor performs sides on-camera. The casting department uses screen tests to analyze performance, wardrobe, makeup, and the on-screen chemistry between actors. If your project has multiple leads, you’ll need to ensure they work well together and have good chemistry. Screen tests let you see how an actor performs for the camera, their on-screen chemistry with their co-stars, and whether they have the right presence for the role.