Author Question: Changing the f-number of a camera by two stops by going from f/16 to f/8 will change the intensity ... (Read 47 times)

WWatsford · **on:** Jul 28, 2018

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.
c. 1/4.
b. 1/2.
d. 2.

Question 2

A camera uses a:
a. diverging lens to form an imaginary image.
b. converging lens to form a real image.
c. converging lens to form an imaginary image.
d. diverging lens to form a real image.