Development of the Zone System is widely regarded as one of the major achievements in the history of photography. The Zone System is a method of understanding and controlling the exposure and development of the negative, and how to vary that exposure to get the results you want. The Zone System was developed by Ansel Adams and Fred Archer as a simple and straightforward method by which they could control exposure. Before Adams and Archer, the photographic industry had already standardized f-stops and shutter speeds as controls of light. But photographers still didn't know exactly how much…
