The f -number of a camera is the focal length of the lens divided by its aperture

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The f -number of a camera is the focal length of the lens divided by its aperture (or diameter). How can the f –number of the lens be changed? How does changing this number affect the required exposure time?

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Physics

ISBN: 978-0077339685

2nd edition

Authors: Alan Giambattista, Betty Richardson, Robert Richardson

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Question Posted: Apr 17, 2010 05:15 AM

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The f -number of a camera is the focal length of the lens divided by its aperture

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One can change the f number either by changing the focal lengt...View the full answer

Physics

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