18 - Duality
Also referred to as balance.
Composition of two separate elements that hold equal importance to the image.
The elements don’t necessarily need to be the same size, but they need to have equivalent weight in terms of importance.
Elements can be on the same focal plane, or be in the foreground and background.
An example of duality in action can be observed in the three hockey photos below. The first photo is balanced as their is one player closer to the camera (foreground) and two players in the background. Both elements are needed to balance the image.
Assignment: compose a photo with two separate elements that balance in image. The two elements must be different objects and can either be on the same plane, or be in the foreground / background.