Contrast is one of the most crucial principles of design photography. You can see the contrast when two elements of the shot oppose each other, for instance, dark vs light, cool vs warm. However, contrast refers not only to colors and shades. With the help of the texture, you can demonstrate contrast as well.
What Sells Best On Shutterstock?
Some types of photos that sell best are Portrait Photography, Food Photography, Landscapes (usually with people) and fine art photography (artsy).