A camera lens has a focal length of 224.0 mm, an aperture diameter of 14 mm,...

A camera lens has a focal length of 224.0 mm, an aperture diameter of 14 mm, and the shutter speed is set to 1/10 s. What f-number setting would be required in order that the same camera sensor receive the same light intensity (brightness) if the shutter speed is now set to 1/40 s?

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genius_generous answered 1 year ago

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