a. A camera has a lens with a focal length of 0.032 m. Thecamera is set to an f-number of 5.6. The shutter speed (the amountof time during which the aperture is open to expose the film) isset to 0.35 s. What is the diameter of the camera's aperture?
b. If the camera is focused on an object that is 0.39 m awayfrom the lens, how far is the film behind the lens?
c. If the f-number is changed to 2.8, does that increase theamount of light hitting the film, decrease it, or leave itunchanged?
Increases it.
Does not change it.
Decreases it.
d. By what factor does the amount of light hitting the filmchange when the f-number is changed from 5.6 to 2.8?
e. If you wanted to adjust the shutter speed so that the amountof light falling on the film with an f-number of 2.8 was the sameas it was for the original f-number and shutter speed, what shutterspeed should you use?
f. If you want to focus the camera on a very distant object, howfar must the lens be from the film?
