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Author Question: Halving the focal length of a telephoto lens, while holding aperture size constant, will change the ... (Read 20 times)

rachel9

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  • Posts: 495
on: Jul 28, 2018
Halving the focal length of a telephoto lens, while holding aperture size constant, will change the light intensity admitted to the film by what factor?
 a. 0.50
  c. 0.25
  b. 2.0
  d. 4.0

Question 2

Doubling the aperture diameter of a camera lens will change the light intensity admitted to the film by what factor?
 a. 4.0
  c. 0.50
  b. 0.25
  d. 2.0


C.mcnichol98

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  • Posts: 314
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


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