Shot Sizes.

Shot size basically means how big things are in the picture, and whether it mainly shows the setting, people in the setting, or details of faces and things.  Most filmmakers use standard names for shot sizes. It’s important to use different shot sizes in your movie. It’s a way of spelling things out, to make sure that people see exactly the things you want them to see. If you shoot everything in long shot (head to foot) people will probably miss details and expressions which would help them understand the story.