Instant cameras and commercial film development at reasonable prices helped cameras become a part of almost every household. You should learn about lenses, exposure, and other basic techniques used in the many different types of photography. Portrait and wedding photography is typically photographs that are made and sold directly to the families of the people in the images. Conceptual photography turns a concept or idea into a photograph. 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. "One picture is worth a thousand words," which has an interesting basis in the history of photography.