I take two pictures of my dog Kaycee. I use the same film and level of illumination for both pictures, but I quadruple the f-number for the second picture. By what factor will the required time of exposure change if the film is to receive the same total light energy?
I take two pictures of my dog Kaycee. I use the same film and level of illumination for both pictures, but I quadruple the f-number for the second picture. By what factor will the required time of exposure change if the film is to receive the same total light energy?
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I take two pictures of my dog Kaycee. I use the same film and level of illumination for both pictures, but I quadruple the f-number for the second picture. By what factor will the required time of exposure change if the film is to receive the same total light energy?
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