Nikon D300 User Manual (en)

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102
Z
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. 352), lock the 
aperture ring at the minimum aperture (highest f-number). Type G lenses 
are not equipped with an aperture ring.
Non-CPU lenses 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.
Mode
Description
e
Programmed 
auto
(pg. 104)
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. 106)
User chooses shutter speed; camera selects 
aperture for best results. Use to freeze or blur 
motion.
g
Aperture-
priority auto
(pg. 107)
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. 109)
User controls both shutter speed and aperture. 
Set shutter speed to “
A” for long time-
exposures.