Composition Definitions - Emphasis & Photo Examples

Leading Lines: Leading lines are lines within an image that leads the eye to another point in the image, or occasionally, out of the image. Anything with a definite line can be a leading line. Fences, bridges, even a shoreline can lead the eye. If can pair leading lines with a subject that is placed according to the rule of thirds your image should be very strong.
Rules of 3rds: The rule of thirds is a compositional rule of thumb in visual arts such as painting, photography and design. 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. Proponents of the technique claim that aligning a subject with these points creates more tension, energy and interest in the composition than simply centering the subject would.
Framing:  Framing is a technique used to bring the focus to the subject.
Repitition: Repetition in photography is a fun little niche that can be used to play with patterns that can be found in our visual world around us.
Contrast: Contrast in photographic composition is an effective means of directing the viewer's attention to the center of interest. Positioning of subject elements to create contrast gives them added emphasis and directs the viewer's attention.
Leading Lines
Rules of 3rds
Framing
Repetition
Contrast