a. A camera has a lens with a focal length of 0.032 m. The camera is...

a. A camera has a lens with a focal length of 0.032 m. The camera is set to an f-number of 5.6. The shutter speed (the amount of time during which the aperture is open to expose the film) is set 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 away from the lens, how far is the film behind the lens?

c. If the f-number is changed to 2.8, does that increase the amount of light hitting the film, decrease it, or leave it unchanged?
Increases it.
Does not change it.
Decreases it.

d. By what factor does the amount of light hitting the film change when the f-number is changed from 5.6 to 2.8?

e. If you wanted to adjust the shutter speed so that the amount of light falling on the film with an f-number of 2.8 was the same as it was for the original f-number and shutter speed, what shutter speed should you use?

f. If you want to focus the camera on a very distant object, how far must the lens be from the film?

Expert Solution

genius_generous answered 9 months ago

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