Quadrupling the aperture diameter of a camera lens will change the f-number by what factor?
A)1/16
B)1/4
C)4
D)16

Question

Quizplus · Accepted Answer

The f-number is inversely proportional to the aperture diameter. This means that as the diameter of the aperture increases, the f-number decreases.

When the aperture diameter is quadrupled, it means that it is multiplied by 4.

Therefore, the f-number will be divided by 4 (since it is inversely proportional).

So, the answer is B, which represents a change in the f-number by a factor of 1/4.

Quadrupling the Aperture Diameter of a Camera Lens Will Change