When you look back at photos from a trip, a scene that was clearly beautiful can somehow feel flat. Photos taken by professionals or scenes from films, on the other hand, let the eye move naturally and feel stable, even in the same place. The most basic principle of framing that makes this difference is the ‘Rule of Thirds.’
Simply put, the rule of thirds means ‘a composition principle that divides the frame into nine sections, three across and three down, and places important subjects on those lines or at the points where they meet.’ It is considered the first composition rule people learn, not only in photography, painting, and design but also in film and video shooting.
In this article, we will look in turn at the basic principle and history of the rule of thirds, specific ways it is used in filmmaking, scenes that deliberately break the rule, and tips you can put to use right away in everyday life.
How a Composition That Divides the Frame into Nine Works
The Principle and History of the Rule of Thirds
The rule of thirds starts with imagining two evenly spaced horizontal lines and two vertical lines drawn over the frame. The core of the principle is that placing the main subject on one of these lines or at one of the four intersections among the nine sections creates more tension and liveliness than placing it in the very center. The four intersections are often called ‘power points,’ because they draw the eye so strongly.
When a subject is placed in the center, the frame is split exactly in half and the eye tends to stop in one spot. When the subject is placed on one of the side lines instead, a difference in weight arises between the subject and the rest of the space, and the viewer’s eyes travel from the subject to the background and back again, scanning the whole frame. This movement is what brings the frame to life.
The first person to put this expression in writing was the English painter and engraver John Thomas Smith. In his 1797 book Remarks on Rural Scenery, he quoted painter Joshua Reynolds’s remarks on distributing light and shadow and wrote that, in a landscape, setting the sky at about two thirds or one third of the picture is more harmonious than dividing it exactly in half. He himself named this ratio the ‘rule of thirds.’
The rule of thirds is often described as a simplified version of the golden ratio, but the two ratios are different. A line drawn at the golden ratio falls about 38% of the way in from the edge, while a rule-of-thirds line falls about 33% of the way in.
The Rule of Thirds in Filmmaking
In video, the rule of thirds serves as the basic framework for placing people and landscapes. The methods often used on set can be summarized as follows.
- Horizon Placement: Align the horizon with the upper or lower line rather than the middle of the frame. If the sky is striking, put the horizon on the lower line; if the land or sea matters more, put it on the upper line.
- Eye Line: When filming a person, align the body with one vertical line and place the eyes near the upper horizontal line. This keeps the space above the head from becoming too wide or too narrow.
- Looking Room: Leave more space on the side the person is looking toward. If the space in front of their gaze is blocked, the frame feels cramped and uneasy.
- Lead Room: For a subject that is walking or running, leave space ahead of it in the direction of movement. Seeing that empty space, viewers naturally anticipate where the subject is heading.
In dialogue scenes, the two characters are often placed on the left and right vertical lines, facing each other. The fact that most smartphones and cameras today can display a nine-section grid on the screen also shows how widely this principle is used.
Scenes That Break the Rule
The rule of thirds is not a rule that must always be followed but a rule of thumb that serves as a starting point. As early as 1845, the English chemist and color researcher George Field pointed out that always dividing colors and areas in a rule-of-thirds ratio could become monotonous.
(1) Central composition and symmetry
Placing the main subject in the exact center of the frame and making the left and right sides match can strongly convey solemnity, isolation, and tension. Some directors famous for symmetrical compositions have made this approach their personal signature.
(2) Intentional discomfort
Pushing a character to the edge of the frame or deliberately blocking the space in front of their gaze makes viewers feel uneasy, as if the character is trapped or being chased. The moment the rule is broken becomes a device for conveying emotion.
(3) A frame left empty
Some scenes place a person very small in one corner of a wide sky or an empty field. Leaving most of the frame empty emphasizes the character’s loneliness or the vastness of nature. In the end, you need to know the rule of thirds to twist it the way you intend in scenes like these.
Tips You Can Use Right Away in Everyday Shooting
The easiest way to learn the rule of thirds is to turn on the grid lines in your camera settings. Simply getting into the habit of deciding which intersection to place the subject on and which line to align the horizon with before you shoot will make a noticeable difference in your photos and videos.
When photographing people, don’t leave too much space above the head, align the eyes with the upper line, and leave space on the side they are looking toward. For photos you have already taken, re-framing them with the grid lines that appear in the crop tool of an editing app is also good practice. Once you are used to it, alternating with central composition and comparing which composition suits which scene will sharpen your eye even faster.
The small habit of seeing the frame in nine sections is the first step toward good composition.
