Question: A camera is being used with the correct exposure at f/4 and a shutter speed of 1/32 s. In order to stop a fast-moving subject,

A camera is being used with the correct exposure at f/4 and a shutter speed of 1/32 s. In order to “stop” a fast-moving subject, the shutter speed is changed to 1/256 s. Find the new f -stop that should be used to maintain satisfactory exposure, assuming no change in lighting conditions.

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The exposure time is being reduced by a factor of 21256 s 1 132 s 8 Thus ... View full answer

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