Learning About Light in Photography

Camera technology, whether film or digital sensor, is driven by light. Al Judge in his book, Mastering Aperture, Shutter Speed, ISO and Exposure, explains the exposure triangle. The descriptions are concise and complete. While he describes the technical components of the camera that deals with aperture, shutter speed, and ISO, he explains the properties of light, distance, and lens type that affects the final image. No where did I see a discussion of mega pixels, or an emphasis on zoom and other features that may be useful but secondary to making good judgments about core contributors to exposure. Across the pages of his book I began to appreciate that the process of photography is the adjustment of light to produce the desired level of picture quality.