To put it simply, this is a single loan (usually from a bank) where the amount of the loan exceeds the money made from pre-sales. The difference in the amount is referred to as “the gap”.
This crew member (aka Second AC, or Clapper Loader) is responsible for preparing and operating the clapper at the beginning of each take. The second AC is also responsible for loading the camera if a designated camera loader has not been appointed.
This crew member, (AKA first AC, or focus puller) is responsible for making sure that the camera stays in focus through out the duration of the shot. Often times the depth of field changes, or the object that is being shot changes position and it is the job of the first AC to make sure the focus is adjusted properly when these changes happen.
This person uses the camera under the direction of the Director of Photography. He/she is the one looking through the view finder, and operating the movement of the camera.
A line producer is different from a producer in the sense that a line producer is not involved in the creative aspects of the film-making process. Their job is to manage the budget on a film, and make sure the film stays on budget. They are usually on set every day (hence why they can only work on one project at a time), and they work closely with the production manager to keep everything on budget and on schedule.
The production manager (aka PM) is responsible for supervising the entire physical aspect of production (not creative). This includes the crew, budget, schedule, equipment, and food. It is usually the production managers responsibility to make sure the day-to-day operations are on schedule and on budget. They look after salaries, production costs, equipment rental costs, and food costs. The PM usually works under the line producer.
After the shooting schedule is made, the production manager will also make a day-out-of days schedule which is a special schedule that shows when each actor works during the course of the schedule. This is important for the producer to structure the best actor deals, and for the director to know when each actor will be needed on which day.