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Shutter
speed
and
aperture
Light reach
in
g the CC O image device
is
contro
ll
ed by shutter
speed and aperture. The
proper
combinati
on
results
in
a
correct exposure. You can use shutter speed to freeze the
action by using a high shutter speed, or create a motion effect
by choosing a slower shutter speed. You can control depth of
field by varying the aperture. Smaller apertures make the
background
and foreground sharper while larger apertures
tend to blur the
background
.
Taken with high shutter speed Taken with slow shutter speed
The higher the shutter speed the more effectively you can stop the action, and
the slower the shutter speed the more blurry the action becomes.
Taken with narrow aperture
Taken with wide aperture
Depth of field is the zone of sharpness
in
front of, behind and around the
subject
on
which the lens
is
focused, and it is greatly affected by aperture.
The sma
ll
er the aperture, the more distinct the background and foreground, and
the larger the aperture the sharper
th
e main subject appears against a blurred
background.
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