Question Detail

PHY 104 Refraction Through Lenses and Optical Instruments Objective Question

Question

In a camera, what is the primary function of the f-stop?
Options
A To adjust the position of the lens for focusing
B To control the amount of time light enters the camera
C To control the maximum opening of the shutter, thus regulating light entry
Correct Answer
D To convert light into digital signals
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 32 states: 'f-stop: controls the maximum opening of the shutter. This allows the right amount of light to enter to properly expose the film, and must be adjusted for external light conditions.'

Hint

The f-stop is related to the aperture, which regulates the amount of light.

Question Info