Rule Of Thirds

 
The Rule of Thirds applies to the location of elements within an image and states that, when splitting up an image into a 9x9 grid, key points of interest should be placed on the points of intersection where they act as the main area a viewer would focus on. This rule is used in a number of different fields with a  few being photography and where to position the important subjects in an image, as well as film and where characters or main plot elements should be placed to maintain the audiences focus.