The production period essentially begins when the camera rolls. This is sometimes called the start of principal photography. Since movie equipment can be expensive, it is often rented for the duration of production, or only on the days it is needed. Lower-priced gear may be purchased outright. Additional photography or pickup shots are scenes filmed separately from the main production or after the principal shooting is done. The material that’s been filmed may be viewed during production, on set, or elsewhere. The traditional film term for the footage recorded by the camera is rushes or dailies, because the film is processed and printed at the lab as fast as possible for daily viewing (these terms can