Tag Archives: exposure calculator

Not only fish and snakes have scales

Toronto. An option to actinometers or extinction meters was the more sophisticated scales and nomographs. These devices like the Harrold Exposure Scale patented in 1922, or the Johnson “Standard Exposure” calculator, allowed a photographer to describe a scene and the … Continue reading

Posted in camera | Tagged , , , , | Comments Off on Not only fish and snakes have scales