Nikon D100 - Manual (Page 97)

Taking Photographs—Exposur
e
Controlling How the Camera Sets Exposure
85
Metered Area
In spot metering, exposure will be locked at the value metered in a 3-mm (0.12˝) circle
centered on the selected focus area. If closest subject priority (
67) is in effect, the
center focus area will be used to set exposure. In center-weighted metering, exposure
will be locked at the value metered in an 8-mm (0.31˝) circle at the center of the
viewfinder.
Adjusting Shutter Speed and Aperture
While exposure lock is in effect, you can change the following settings without chang-
ing the metered value for exposure:
Exposure mode Settings
Auto multi program Shutter speed and aperture (flexible program; 78)
Shutter-priority auto Shutter speed
Aperture-priority auto Aperture
The new values can be confirmed in the viewfinder and control panel.
14—AE-L/AF-L ( 154)
Depending on the option selected, the AE-L/AF-L button locks both focus and exposure
(the default setting), only focus, or only exposure. If you choose AE Lock Hold, expo-
sure will lock when the button is pressed and remain locked until it is pressed again.
15—AE-Lock ( 155)
If +Shutter Button is selected for AE Lock, exposure will lock when the shutter-release
button is pressed halfway.
3 Keeping the AE-L/AF-L button pressed, recompose your photograph and
shoot.