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Exposure
t erminology
• Aperture:
a n
o pening
i n
t he
l ens
t o
a llow
m ore
o r
l ess
l ight
• Aperture
a lso
e ffects
h ow
m uch
o f
a n
i mage
i s
i n
f ocus
( depth
o f
field)
• Larger
l ens
o penings
(
f /1.4)
c reate
a
shallower
d epth
o f
f ield
(smaller
area
i n
f ocus)
Depth
o f
f ield
i s
a lso
a ffected
b y
t he
focal
l ength
o f
t he
l ens.
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