Cinematography: the art of photography and visual storytelling in a motion picture or TV show.
Cinematographer: the person in charge of the camera and the lighting crew.
Gaffer: Person who is in charge of the electrical department

Example of diegesis: Spirited Away

Spirited Away creates such a vivid and immersive world, especially to represent how the protagonist Chihiro moves to a new, strange world; its like the audience is transported with her. The camera nearly always follows Chihiro, so the audience only experiences what she does, so they feel like they are joining her on this journey.

Example of intra-diegesis:

Children of men use a lot of intra-deigetic gaze to put the audience in the action surrounding the protagonist. This further immerses the audience in the story and the dystopian world they have created.

Example of extra-diegesis:

Deadpool purposely breaks the 4th wall with sarcastic comments in order to create comedic effect and emphasise Deadpool’s humorous nature.