It is important to note that the differences between film and digital photography are far less significant than the differences between painting and film photography. Currently digital photography, disposable cameras and even camera-phones continue to make photography part of our lives. At the highest-end, some digital cameras are nothing but a sophisticated light-sensing unit. You should learn about lenses, exposure, and other basic techniques used in the many different types of photography. The aesthetics of photography is a matter that continues to be discussed regularly, especially in artistic circles. Modern digital cameras have comparable noise/grain at the same ISO as film cameras. Throughout the history of photography, technological advances in optics, camera production, developing, and imaging have had an effect on the way people view images. Even after color film was readily available, black-and-white photography continued to dominate for decades, due to its lower cost and its "classic" photographic look. Photography can also be viewed as a commercial and artistic endeavor. 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. 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.