Thread: Photography 101
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Old 05-16-2008, 08:19 PM   #12
Ibby
erika
 
Join Date: Apr 2006
Location: "the high up north"
Posts: 6,127
UT, think of it like this

not 'holding your fingers in a circle around your eye
but rather
your actual pupil dilating/contracting.
THAT is our equivalent to an aperture.
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