What does a game of tic-tac-toe have to do with photography? The grid this simple child's game is played upon is key to composing your image in a dramatic way. In photography, this grid works with the "rule of thirds" to create visually compelling images. The rule of thirds taps into the way that the human eye works to predict the most visually appealing places within a frame. This allows the photographer to use the way that the eye works to add to the impact of his or her images.