The Elements of Exposure As you can see in the graphic above, there are three elements of exposure: aperture, shutter speed, and ISO. These three elements are easiest to think of as an exposure triangle, with each element interacting with the other to result in a good exposure.
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).