Changing the f-number of a camera by two stops by going from f/16 to f/8 will change the intensity of the light hitting the film by a factor of:
A) 4
B) 1/2.
C) 1/4.
D) 2.

Name: Changing the f-number of a camera by two stops by going from f/16 to f/8 will change the intensity of the light hitting the film by a factor of: A) 4 B) 1/2. C) 1/4. D) 2.
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Question

Quizplus · Accepted Answer

Changing the f-number by two stops from f/16 to f/8 increases the light intensity by a factor of 4, as each stop doubles the light.

Changing the F-Number of a Camera by Two Stops by Going