To get the same exposure on the film when the aperture diameter of a camera lens is doubled, what change should be made in the shutter speed?
A) It should be doubled.
B) It should be halved.
C) It should be quadrupled.
D) It should be quartered.
E) It should be reduced by a factor of 1.414.

Question

Quizplus · Accepted Answer

Doubling the aperture diameter increases the area by a factor of four, allowing four times more light to hit the film. To maintain the same exposure, the shutter speed should be quartered, reducing the exposure time by a factor of four.

To Get the Same Exposure on the Film When the Aperture