filmmakers and different shots

blog question: What are 3 reasons why filmmakers frame their shots differently?

When a filmmaker frame their shots, they must always pay attention to how much zoom is on the shot, the focus, and how much exposure the camera is letting in (iris). Filmmakers frame their shots differently due to many reasons including the lighting. Lighting is key in filmmaking and filmmakers need to make sure that the amount of light they are allowing in their shot, is not too bright or too dark. To manage this, they use the iris which controls the amount of exposure the camera lens takes in. In the iris, there is the shutter which is basically a little door that opens inside the camera to let a timed amount of light enter. Another reason why filmmakers may frame their shots differently is that their shot is not positioned correctly. Filmmakers tend to follow "the rule of thirds". This helps to center your shot correctly. For example, the horizon line of a shot should always be on the second horizontal line.