This rule states that something interesting should happen along the dividing lines or at an intersection when an image is divided into three. The best thing about this rule is that you can apply it after you've taken the image by cropping your photos. There are a few different ways to follow this rule, I'll talk you through the main 3.
Not sure what I'm babbling about? I think it's easier if I show you.
This image has been divided into three pieces horizontally and three pieces vertically. As you can see 1/3rd of this image is grass and the other 2/3rds are made up of the trees and the sky. This is the perfect crop for this image if you wanted to make a good feature of the background.
Rule of Thirds - 1/3rd Grass
You can also have it so that a different horizon line sits on the line of thirds, this creates an image that is 1/3rd sky and 2/3rds trees and grass. This still shows a great deal of the background but Dylan is larger in the frame drawing the eye to him a little bit quicker.
The Rule of Thirds - 1/3rd Sky
If you really want to draw the eye straight to the main feature point of the image it is best to sit that part of your image on an intersection when deciding on your crop. As you can see I've put Dylan's eye directly on the intersection here. This is because when taking a photograph of a person or animal, the eyes are what you should usually be focusing on first.
The Rule of Thirds - Dylan's eye on intersection
So there you have it! A quick and easy trick that you can implement before or after you've taken your photographs.
Do you want to show off your best rule of thirds crops? Pop on over to the Facebook group.
If you're not sure you can get to grips with it on your own, don't forget we do offer training as well!