The rule of thirds is a design principle based on a photographer/artist visualizing both the vertical and horizontal division of a composition into thirds, and then placing the subject where the lines [..]

is a method of composing your shots in an aesthetically pleasing way. For more information, check out our lesson on Framing and Composition.

More a composition guideline than a rule, here's how it works: imagine the lines of a tic-tac-toe game board superimposed over the scene you're viewing in the finder. The Rule of Thirds says [..]

 The Rule of Thirds is an aesthetically pleasing way to compose the frame. If you divide the frame into thirds, the points of interest should be positioned along these lines or at their intersections.

The guideline proposes that an image should be imagined as divided into nine equal parts by two equally spaced horizontal lines and two equally spaced vertical lines, and that important compositional [..]

Composition theory based on dividing the screen into thirds vertically and horizontally and the placement of the main subject along those lines.

The rule states that an image should be imagined as divided into nine equal parts by two equally-spaced horizontal lines and two equally-spaced vertical lines, and that important compositional elements should be placed along these lines or their intersections.   Further Information and some more.  

The rule states that an image should be imagined as divided into nine equal parts by two equally-spaced horizontal lines and two equally-spaced vertical lines, and that important compositional elements should be placed along these lines or their intersections.   Further Information and some more.

A compositional strategy that lays an imaginary grid over the frame and places the main subjects at its points of intersection.

First mentally divide your scene horizontally and vertically into thirds. Then place the main subject where the lines meet. This makes s very pleasing composition.

More a composition guideline than a rule, here's how it works: imagine the lines of a tic-tac-toe game board superimposed over the scene you're viewing in the finder. The Rule of Thirds says [..]

A simple composition technique that is used to assure balance in a photograph. The scene is mentally divided into thirds both horizontally and vertically. The placement of key subject matter at the intersections of the thirds creates a balanced division of space within the frame.

This rule involves envisioning a tic-tac-toe board on top of a video shot, so the image is divided into nine squares. The videographer should choose one of the four points of line intersection as a fo [..]

A design principle made up of a grid that breaks up the composition of an image into 9 separate squares suggesting that the photogapher place the subject at one of intersecting lines.

A compositional rule which suggests to divide your paper into thirds horizontally and vertically (creating nine equal boxes). Important elements/subjects should be placed along these points of interse [..]