Nikon D700 Mode D'Emploi

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Z
g
: Aperture-Priority Auto
In aperture-priority auto, you choose the aperture while the camera 
automatically selects the shutter speed that will produce the 
optimal exposure. To take photographs in aperture-priority auto:
1
Select exposure 
mode 
g.
Press the I button 
and rotate the main 
command dial until g 
is displayed in the 
viewfinder and control 
panel.
2
Choose an aperture.
While the exposure 
meters are active, 
rotate  the sub-
command dial to 
choose aperture from 
values between the 
minimum and maximum for the lens. Small apertures (high f-
numbers) increase depth of field (pg. 115), bringing both 
foreground and background into focus. Large apertures (low 
f-numbers) soften background details in portraits or other 
compositions that emphasize the main subject.
I button
Main command dial
Sub-command dial
Large aperture (f/2.8)
Small aperture (f/32)