Hitchcock's Rule

 Hitchcock's rule explains that the size of an object in frame should be dependent on its significance in the scene. This applies to filmmaking because the rule brings attention to what you want to display and conveys they objects importance at the moment and can even bring tension and suspense. In my mobile film I filmed a close up of a backpack, this shot was composed and framed this way to show that the backpack was important at the time.