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Exposure Mode
Exposure mode determines how the camera sets shutter speed
and aperture when adjusting exposure.
Four modes are available:
programmed auto (e), shutter-priority auto (f), aperture-priority
auto (g), and manual (h).
A Lens Types
When using a CPU lens equipped with an aperture ring (pg. 370), lock the
aperture ring at the minimum aperture (highest f-number).
Type G lenses
are not equipped with an aperture ring.
Non-CPU lenses (pg. 372) can only be used in exposure mode g (aperture-
priority auto) and h (manual).
In other modes, exposure mode g is
automatically selected when a non-CPU lens is attached.
The exposure
mode indicator (e or f) in the control panel will blink and F will be
displayed in the viewfinder.
A See Also
See page 326 for information on locking shutter speed (modes f and h)
and aperture (modes g and h).
Mode Description
e
Programmed
auto
(pg. 116)
Camera sets shutter speed and aperture for
optimal exposure.
Recommended for snapshots
and in other situations in which there is little time
to adjust camera settings.
f
Shutter-priority
auto
(pg. 118)
User chooses shutter speed; camera selects
aperture for best results.
Use to freeze or blur
motion.
g
Aperture-
priority auto
(pg. 119)
User chooses aperture; camera selects shutter
speed for best results.
Use to blur background for
portraits or bring both foreground and
background into focus for landscape shots.
h
Manual
(pg. 121)
User controls both shutter speed and aperture.
Set shutter speed to “A” for long time-
exposures.