There are photography articles and guides. If you have a knack for photography, and enjoy doing it, then you might want to think about using your hobby as a way to make some extra money for yourself. Digital photography has also been adopted by many amateur snapshot photographers, who take advantage of the convenience of the form when sending images by email, placing them on the World Wide Web, or displaying them in digital picture frames. When learning to be a professional photographer you should try entering photography contests. Fashion photography emphasizes the clothes or product, glamour emphasizes the model. Photojournalism can be considered a subset of editorial photography. You have many options when it comes to a career in photography, depending on your own personal interests. Some commercial photographers, and some amateurs interested in artistic photography, have been resistant to using digital rather than film cameras because they believe that the image quality available from a digital camera is still inferior to that available from a film camera, and the quality of images taken on medium format film is near-impossible to match at any price with a digital camera. You should learn about lenses, exposure, and other basic techniques used in the many different types of photography. 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. Photography is used to preserve memories of favorite times, to capture special moments, to tell stories, to send messages, and as a source of entertainment. Photography as a usable process goes back to the 1820s with the development of chemical photography. Photography is a unique and creative medium of self-expression.