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Author Question: A camera lens is initially set at f/16 for a shutter speed of 1/30 s. If the amount of lighting on ... (Read 94 times)

EY67

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on: Jul 28, 2018
A camera lens is initially set at f/16 for a shutter speed of 1/30 s. If the amount of lighting on the subject is unchanged, and the lens is set at f/5.6, what is the proper shutter speed at this setting?
 a. 1/8 s
  c. 1/500 s
  b. 1/250 s
  d. 1/16 s

Question 2

What is the f-number of a camera lens that has an aperture-opening diameter of 0.20 cm and a focal length of 3.0 cm?
 a. 10
  c. 15
  b. 0.10
  d. 0.80


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Dominic

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

B

Answer to Question 2

C


EY67

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Reply 2 on: Jul 28, 2018
Excellent

peter

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Reply 3 on: Yesterday
Wow, this really help

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