Rule of Thirds

The "Rule of Thirds" is a tip for where to place subjects in the frame to make the image look more interesting and natural to the eyes. In essence, this rule divides the 16:9 image into a 3x3 frame, creating both three sections horizontally and vertically. Generally, it's advised to frame your subject  on one of the points of intersection in the grid, and to adjust their eye-line to be on the top horizontal line. Also when filming something like a horizon or a sunset, it's important to use the 3x3 grid and place the phenomenon on one of the horizontal lines. In the future, it's important to remember this rule because it gives a basis of how to compose a decent shot, however it's also important to recognize that the rule can be broken when you want to create a certain effect.