The exposure index EI for a 35 millimeter camera is a measurement of the amount of light
Chapter 6, Problem 64(choose chapter or problem)
The exposure index EI for a 35 millimeter camera is a measurement of the amount of light that hits the film. It is determined by the equation EI = log2 f 2 _ t , where f is the f-stop setting on the camera, and t is the exposure time in seconds. Suppose the f-stop setting is 8 and the desired exposure time is 2 seconds. What will the resulting exposure index be?
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