Doubling the aperture diameter of a camera lens will change the light intensity admitted to the film by what factor?
A)0.25
B)0.5
C)2.0
D)4.0

Name: Doubling the aperture diameter of a camera lens will change the light intensity admitted to the film by what factor? A)0.25 B)0.5 C)2.0 D)4.0
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Question

Quizplus · Accepted Answer

Doubling the aperture diameter increases the area of the aperture by a factor of four (since area is proportional to the square of the diameter), thus increasing the light intensity by a factor of four.

Doubling the Aperture Diameter of a Camera Lens Will Change