f/32 is a larger aperture than f/16
f/11 lets in twice as much light as f/8 @ 1/125th second.
1/125th second is a shorter time than 1/60th second.
Changing your shutter speed one stop has the same effect on exposure as changing your aperture one stop.
“Relative aperture” is aperture in relation to focal length.
In terms of relative aperture, all f/16’s let in the same amount of light at a given shutter speed.
Going from f/8 to f/16 is an example of “stopping down”.
Going from a smaller relative aperture to a larger relative aperture is called “opening up”.
Stopping down two stops cuts the amount of light in half.
Exposer is a function of aperture and shutter speed.
2007-03-14
12:30:17
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6 answers
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asked by
Black_Rose
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in
Arts & Humanities
➔ Visual Arts
➔ Photography