This is contrast. There is not light to dark shown it is just light AND dark. The black and blue are contrasting.
The eye immediately is drawn to the sun in the center of the photo, so this dip lays emphasis.
THis shows movement because the boy is moving to get the ball.
The two shoes are balancing out the photo. Because both sides have a shoe, one is not overpowering the other. Balance.
The picture of this umbrella shows unity because the spokes are coming together as one in the center.
This photo displays repetition/pattern because of the repeating diamond shape. Also, the shape is the same throughout and is not modified.
gLike
The Principles of Photography

These photos each capture 1 of the 6 different principles of photography.

Paige Smith
Student Photographer Sparta Township, NJ