A sequence is composed of interrelated scenes that happen in a specific time frame. The said scenes are presented one after the other to form one sequence. The scenes are further divided into a film's basic unit called a shot, which refers to the particular footage recorded at a specific time using the camera. This involves pressing the camera's "Record" button to film the shot, then pressing its "Stop" button to end the capturing of the footage.
A sequence divides each major action happening on a particular time and location in the story. The sequence number is included when making a storyboard and shotlist. This is also part of the information placed in a shot ID, which is seen in a clapperboard, often simply called an "ID" or "slate." The sequence is typically written using the format "Sequence Number-Shot Number." For instance, the first shot in the first sequence can be written as "1-1." Other information are also included in the slate including each shot's take number and tape or roll number where it is stored. All this information helps the editor in assembling the film.
A sequence is a narrative unit that happens at a particular time and location. It also involves the same actor or set of actors that may or may not be present for the entire duration of the sequence. For instance, a basketball sequence can be composed of different scenes inside a basketball court at a given time period. There can be a scene with players in the court, a scene of the players on the bench, a scene of the cheerleaders and a scene of two fans fighting with each other. A sequence can also be a dream sequence of a particular character, a character's flashback sequence of a past event or a fight sequence between the lead character and the villain.
A production shoots a film in the most practical way possible with major considerations on the creative, technical and scheduling concerns of the project. Often times, the most practical and effective way to acquire the required footage for the movie entails shooting in a per-sequence schedule. This way, the production can practically use the same location, lighting set-up, sets, props and actors for a shooting day. This also lessens the probability of discontinuities that typically happen because of having to mount all production requirements all over again at a different time. This can result in missing out on the right makeup, hairstyle or accessories for the actor or overlooking some details on the lighting setup, sets or props.