This is the part of the description that the user automatically sees without having to tap anything, and usually, this is the only part your potential user will read. It's above the fold. That being said, not only think about keywords but think about this field as the written invitation to an event in which the user will have more information about your app after your App Title. This is the moment you should be convincing enough so that the user downloads your app.
facebook, Photographer, camera, bestphotography
