Find by what factor will required time of exposure change

Reference no: EM13680556

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

Reference no: EM13680556

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Find by what factor will required time of exposure change : Find 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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