This is an extreme low angle shot in Pulp Fiction. It is supposed to show how powerful and dangerous these two characters are.
This is an extreme close up from the movie The Blair Witch Project. This is to show how terrified she is of something.
This would be a high shot from Star Wars: The Empire Strikes Back. This shows how weak Luke is right now.
This is an extreme high angle from the new movie Spiderman: Homecoming. It is a bird's eye view of him flying right over a helicopter.
Wide shot from The Dark Knight Rises to show the city that the next part of the movie will take place.