<Li> Traditionally, the first AD calls "quiet on the set ." However, it is more common in current productions to hear first "Picture is up!" (or "Rehearsal's up" accordingly) followed by "Quiet please!" to alert everyone that the take is ready and imminent . "Lock it down" or more commonly "Lock it Up" is also a signal (particularly on location) to ensure nothing interrupts the take . This call is crucial for third assistant directors, as this is their primary responsibility during a take . </Li> <Li> "Turnover ." While most AD's say both "roll sound" and "roll camera", "turnover" signals both the camera and sound departments to start rolling . The sound department will roll first . After a second or two, the sound recordist will confirm that the recording equipment is running at the correct speed by calling "Speed" or "Sound Speed ." Hearing this, the clapper loader immediately calls out the "Scene" and "Take" numbers so that these details are on the recording . Simultaneously (or within a very few seconds) the Camera Operator or focus puller will roll the camera, and immediately the camera is confirmed as running at the correct speed, will call for the clapper - loader to "mark it" (or "smack it," "bang it," "tag it," etc .). This is done by showing the slate ("clapperboard") on camera, and bringing the clapper down to make a synchronisation point for audio (the sound of the clapper) and picture (the two parts of the clapper being seen to come together). With the slate quickly taken out of shot, and the camera refocused or repointed as necessary for the opening framing, the camera operator calls "set" or "frame" to indicate that all is ready to capture the action . </Li> <Li> The responsibility to call "action" is shared by either the first assistant director or the director, depending on the director's preference . "Action" may be preceded by "background action" if extras must be in motion in the shot, which is called by one of the lower AD's or sometimes the first . According to SAG - AFTRA regulations, the director must never address background actors directly on set, so the AD's carry information from the director to background actors . </Li> <Li> Usually the director says "cut," but camera operators may also "cut" to save film if they know the take is unusable . The operator may also call "cut" if the camera has "rolled out," i.e. run out of film . The Operator will not cut if there are other cameras still rolling or an interruption would ruin the actor's focus . </Li>

Who calls 'action' on a film set