The easiest way to make your photographs available as stock images for sale is by using a third-party microstock website such as iStockPhoto, Dreamstime, Shutterstock, 123RF, or Getty Images via Flickr. Selling your photos through a stock agency like this is quick and easy.
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).