Balance is a technique in photography in which that that the objects are of equal visual weight, When different parts of a photo command your attention equally, perfect balance is achieved.

The rule of thirds is applied by aligning a subject with the guiding lines and their intersection points, placing the horizon on the top or bottom line, or allowing linear features in the image to flow from section to section.

Leading lines is the technique where the viewer of your photos attention is drawn to lines that lead to the main subject of the image. A Leading line paves an easy path for the eye to follow through different elements of a photo.

Depth is the distance between the nearest and furthest elements in a scene that appear to be “acceptably sharp” in an image. The distance between the camera and the first element that is considered to be acceptably sharp is called DoF near limit.