What is the aid to visual composition by imagining a tic-tac-toe grid over the shot called?

The aid to visual composition that involves imagining a tic-tac-toe grid over the shot is the rule of thirds. This technique divides the frame into nine equal parts using two vertical and two horizontal lines, creating four intersection points. Placing key elements along these lines or at the intersections helps create a balanced composition that is more visually appealing to the viewer.

Using the rule of thirds leads to dynamic, interesting images as it encourages a more off-centered approach rather than placing subjects directly in the middle of the frame, which can often lead to a less engaging composition. This technique is widely utilized in photography and cinematography to enhance storytelling and draw the viewer's attention to focal points in a way that feels natural and aesthetically pleasing.