Fashion photography emphasizes the clothes or product, glamour emphasizes the model. Photojournalism can be considered a subset of editorial photography. Many photographers agree that the commercially produced cameras were the single biggest drive to popularize the art form. Digital photography was used in astronomy long before its use by the general public and had almost completely displaced photographic plates by the early 1980s. Throughout the history of photography, technological advances in optics, camera production, developing, and imaging have had an effect on the way people view images. When learning to be a professional photographer you should try entering photography contests. There is lots of information here for anyone with a personal or professional interest in photography. Fine art photography includes photographs made to fulfill a vision, and reproduced to be sold directly to the customer. Landscape photography are photographs of different locations often made to be sold to tourists as prints or postcards.