The establishing shot is used in the Lord of the Rings. It establishes the setting of this part of the fantasy world to the audience. By showing the whole setting, it allows the audience to get a feeling for how dangerous and frightening it is, as you can see the giant scale of it.

In Star Wars: The Empire Strikes Back, this close up shot is used to emphasize the strong emotions Luke was feeling, making the audience feel bad for him. The shock on his face also may have reflected the audiences own shock of the revelation.

This extreme close up shot is used in Blade Runner (1982). It is used to allow the audience to take in the sci-fi setting and see the eye’s overwhelmed feeling because of it. It also may be used to set up the eye symbolism throughout the film.