Our brain is programmed to search in the center to find what we are looking for. Because of this, looking at an image with the subject in the center is not very stimulating. It does not create any or enough interest to keep the viewer. By placing the subject off-center it will be a much more compelling image that will attract the viewer’s attention.
Rule of third also referred to as the Golden mean, is one of the most commonly used techniques in photography composition. Getting the composition right is very important for a successful image. Using this technique creates a visually well-balanced image and adds strength to the image as well. Everyone can do it with any camera. It is about taking the time and look twice before you push the trigger. The good thing about composition is it is not depending on what camera you use. This part of photography is not at all about camera adjustments.
What is the rule of thirds?
The basic of the rule of third is to divide the frame into three equal parts horizontally and vertically. The main subject should be placed on one of the four intersections created by the lines or on any of the horizontal or vertical lines. The four intersections and the four lines are referred to as the golden mean.
The upper and lower right intersections are considered to be the best spots to place the main subject. The reason for this is our eyes are used to and will look from the left to the right as when reading a book.
When shooting landscapes, the rule of thirds is useful when positioning the horizon. The horizon should be placed at one of the horizontal lines one third from the top or bottom. If you place the horizon straight in the middle of the frame you divide the image in two. It makes it difficult for the viewer to know which part you intended to be an important part of the image.
Another important composition rule and often seen by beginners is the horizon is not completely horizontal. A sloping horizon is not natural and gives a wrong impression of the image. By using the Golden means when you position the horizon, it is easier to remember placing it correct.
Breaking the rule
No rule without exceptions. In some situations, it will work fine putting the main subject in the center or of the golden means. One such situation is when there is nothing else in the frame that competes with the main subject. The surrounding might be completely out of focus and as such not disturbing. A second situation is when the image has a strong sense of balance. If the top or bottom is equally strong a centered position might work fine.
Post-processing the image
You can after the image is shot, do necessary adjustments in an image editor. If you have an image with a lot of empty space around the main subject because you of any reason did not compose the image properly, you can crop the image in your image editor. When cropping you should remember about the rule of thirds and correctly such as the main subject is placed on any of the golden means. However, the good photographers do the composition in-camera. You can do to with a lot of training.