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Camera

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by

Richard Datwyler

on 23 February 2017

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Transcript of Camera

Camera
f number and intensity
Focal length and light intensity
shutter speed
A camera is properly exposed with a focal length of 25 cm, and has a aperture diameter of 2 cm. What is the F number?
If the current shutter speed is 1/250 s, and it is properly exposed in the shade, then the sun comes out and the photographer changes the shutter speed to 1/1000 s, what does the f number need to be?
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