Use of the camera.

There are a number of camera techniques used in modern films today, these include; Long shot, medium shot, close up, extreme close up, point of view, low angle and high angle.
A medium shot is where you can see the head and shoulders of a person.

A long shot is where you can see the whole picture.

A close up is where you can see the face of a person.

An extreme close up is where the camera goes close up on a persons features e.g. eyes.

A point of view is where you can see what the person sees.

A low angle shot makes people look big and powerful.

A high angle shot makes people looks small and weak.

There are other camera techniques too which include; Pan, tilt, crane shot, tracking shot, rolling shot and stedicam.
Pan is a view from a fixed axis moving across.
A tilt is used to show the size of something e.g. a building.
Crane shot is a view from high above.
A tracking shot is where the camera follows the action.
A rolling shot is where the camera moves from side to side.
A stedicam is where the camera stays still no matter how much the camera man moves it does this by having a gyro sensor fitted to the camera.