Why do photos sometimes use the rule of thirds?
Short answer
The rule of thirds divides a frame into three parts both vertically and horizontally, then places a subject near a line or intersection. Moving the subject away from the center can leave space and create a sense of motion.
How it works
A centered subject can make a composition stable and clear. Placing it slightly to one side can leave room in the direction the subject faces or moves, while also showing more of the background.
Many phones and cameras can show a three-by-three guide grid. The grid is useful for planning, but the best composition depends on the subject and the purpose of the photograph.
Key point
The rule of thirds is a helpful guide, not a rule that must always be followed. Centered subjects and bold cropping can also be effective.