A film director is responsible for overseeing and guiding the creative and technical aspects of a film, coordinating all aspects of a movie's production, from casting actors and managing crew members to guiding the creative vision of the film. They work closely with the screenwriter, cinematographer, and other key members of the film crew to bring the story to life on screen, while also making important decisions about lighting, camera angles, and other technical aspects of filmmaking. The director is ultimately responsible for ensuring that the finished product meets their artistic vision and is successful both critically and commercially.

Here are some of the tasks that a film director typically performs:

1. Collaborating with the screenwriter to develop the story and characters.

2. Preparing a shot list and storyboard that maps out the visual plan for the film.

3. Casting actors and rehearsing performances to achieve the desired tone and emotion.

4. Working with the production designer to create the film's overall look and feel.

5. Selecting camera angles, lighting, and other visual elements to enhance the story.

6. Directing the crew during the shoot to capture the scenes as planned.

7. Reviewing footage and making editorial decisions during post-production.

8. Working with the film editor to create the final cut of the film.

9. Overseeing the sound design, music, and other post-production elements.

10. Participating in promotional activities to market the film.

Note that these tasks may vary depending on the type of film, the production budget, and the director's individual style and approach.