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A Certain Photograph Will Be Correctly Exposed at a Shutter 0.01 s0.01 \mathrm{~s}

Question 82

Short Answer

A certain photograph will be correctly exposed at a shutter speed of 0.01 s0.01 \mathrm{~s} at a lens opening of f2.8\mathrm{f2.8} . What lens opening is needed for a shutter speed of 0.04 s0.04 \mathrm{~s} ?

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