Diegetic perspective:

Diegetic perspective is when the audience looks at the events from an outside perspective. This can also be referred to as ‘This Person Perspective’

Intra-diegetic perspective:

Intra-diegetic perspective is when the audience takes the perspective of an established character. This technique is used a lot in horror films to ground the audience in the horror. This can also be referred to as ‘First person perspective’.

Example: Psycho – shower scene

Extra-diegetic perspective:

Extra-diegetic perspective is when a character directly addresses the fact that the audience is there, recognising the audience as an external entity either simply looking in or almost as a character in the world, even if for just a moment. This can also be referred to as ‘Second person perspective’.

Example: The Emperor’s New Groove