Nikon D5000 User Manual page 98

P,S,A, and M modes offer different degrees of control over shutter
speed and aperture:
-:_i_77°_° _° _ °_]%de _7_77'°'°'°'°'°': Description
Camera sets shutter speed and aperture for optimal exposure.
Programmed auto Recommended for snapshots and in other situations in which
P (_ 81)
there is little time to adjust camera settings.
S Shutter-priority auto 'User chooses shutter speed; camera selects aperture for best
(_ 82) results. Useto freeze or blur motion.
User chooses aperture; camera selects shutter speed for best
A Aperture-priorityauto(_ 83) results. Useto blur background or bring both foreground and
background into focus.
M Manual (_ 84) peed and aperture. Set shutter speed
to "bulb" or "time" for long time-exposures.
_I_ Lens Aperture Rings
When using a CPU lens equipped with an aperture ring (_ 194), lock the aperture ring at the
minimum aperture (highest f-number). Type G lenses are not equipped with an aperture
ring.
[] Shutter Speed and Aperture
The same exposure can be achieved with different combinations of shutter speed and
aperture. Fast shutter speeds and larger apertures freeze moving objects and soften
background details, while slow shutter speeds and small apertures blur moving objects and
bring out background details.
Shutterspeed ___ Aperture
Fast shutter speed
(1/1,6oo s)
Slow shutter speed
(7 s)
Small aperture (f/22)
Large aperture (f/5.6)
(Remember, the higher the Fnumber, the
smaller the aperture.)
80