Production roles

Producer
A producers role can vary depending on if the producer is part of a production company or if it's an independent company. Producers go out and try to find material and stories that they can turn into films, this can be a book that they've read or seen or just a concept either they or someone else has suggested. If it is an original idea, they'll need to find a suitable screenwriter for the project, otherwise the production is likely to end up as a massive failure. They also have the power to direct and edit the film, hire and fire staff, create a filming schedule, check and approve locations, arrange the finance, have the final say on what stays and what gets cut in the final film (e.g scenes and soundtrack) and much more. They are essentially the bosses of the whole production, without the producer the film cant be made.
They choose who is going to write the script and can edit it if they're not too happy with the outcome. if they don't approve of the script, they won't let the production go any further.

Director
The director is the person, occasionally people, that directs the making of a film. They control the films artistic and dramatic aspects, and play a huge role in bringing the script/screenplay to life with the help of the technical team (camera men and women, editors etc.) and the actors. They are in control of choosing the production design, cast members (Actors and actresses) and the creative aspects of the film. The director has to work within the budget that the have been given to use on the whole film, so they need to figure out what and how they're going to distribute that money. The director makes the imagination of the screenwriter to life, and the two often collaborate to agree, discuss and compromise how the film will eventually turn out.

Camera operators
Also known as Cameramen/camerawomen, they are responsible for actually filming the project they are doing using a camera. They're trusted to follow the directions given to them by the film director, maintain composition (the arrangements of visual elements) and camera angles through every scene that is shot. They work with the technical crew and the director to share advice and try to make the screenplay a reality.

Storyboard artists
Storyboard artists are tasked with the challenge of making the written script/screenplay visually represented. They are usually people that have a great skill in interrupting the writing into detailed images in order to help the director and camera operators visualise how the screenwriter wants each shot to look. The studio that hires them has to dissect the screenplay into sections so that the artist has an easier job to picture the scene and shot.

Sound engineer
This is the person that is responsible for recording all the sound during the filmmaking using audio equipment to be used in the finished film, or for reference to be used by the sound designer, sound effects editors or foley artists (people in the post production phase that use everyday objects make useful and effective sounds for the films effects). They use the screenplay to know where they have to be on set and what specific sound they should be trying to capture in each scene. If the sound engineer isn't very good, the recorded sound quality will be very poor and scenes will have to be continuously reshot until the sound quality is to a good standard, this will have to happen to the dismay of the director and studio company as it also costs money especially if it's not noticed straight after the filming of the scene.

Set designer
Responsible for the overall visual look of the production, they work very closely with the director, camera operator and screenwriter to ensure that what they visualised is what the set designer has been able to deliver. They work on the aesthetics of what goes in the background and around the characters to ensure realism. They will look at the screenplay to determine what decade, demographic and climate it is in order to make the set as realistic and believable as possible.

Costume designer
The role of a costume designer is to design and assemble the costumes for each of the characters in a TV show or film. They are tasked with making the costumes as realistic, authentic, comfortable as possible as well as making sure that the costume fits in with the colouring, scenes and textures of the film. They have to work closely with the director and other people in the technical crew. They also use the screenplay as a guide to how the costumes should look like.