Technically, anyone with a camera can be called a photographer just as anyone with a car can be called a driver. Anyone with a set of clubs can be called a golfer. Anyone with a paint brush and an easel can be called an artist. The difference is in the degree.
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).