Human vision normally covers an angle of roughly 40
Chapter 25, Problem 80(choose chapter or problem)
Human vision normally covers an angle of roughly 40° horizontally. A “normal” camera lens then is defined as follows:When focused on a distant horizontal object which subtends an angle of \(40^{\circ}\), the lens produces an image that extends across the full horizontal extent of the camera’s light-recording medium (film or electronic sensor). Determine the focal length f of the “normal” lens for the following types of cameras: (a) a 35-mm camera that records images on film 36 mm wide; (b) a digital camera that records images on a charge-coupled device (CCD) 1.60 cm wide.
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