Nikon D3100 2 Autoexposure Lock, Set metering to M or N0, Lock exposure, Recompose the photograph

Autoexposure Lock

Use autoexposure lock to recompose photographs after metering exposure:

1Set metering to M or N(0 79).

Lwill not produce the desired results. Note that autoexposure lock is not available in i or j mode.

t

2 Lock exposure.	Shutter-release
Position the subject in the selected focus point and press	button
the shutter-release button halfway. With the shutter-
release button pressed halfway and the subject positioned
in the focus point, press the AE-L/AF-Lbutton to lock focus
and exposure.
	AE-L/AF-L button

While exposure lock is in effect, an AE-Lindicator will appear in the viewfinder.

3Recompose the photograph.

Keeping the AE-L/AF-Lbutton pressed, recompose the photograph and shoot.

AThe Shooting Menu

Metering can also be adjusted using the Metering option in the shooting menu (0 131).

AAdjusting Shutter Speed and Aperture

While exposure lock is in effect, the following settings can be adjusted without altering the metered value for exposure:

Mode	Setting
Programmed auto	Shutter speed and aperture (flexible program; 074)
Shutter-priority auto	Shutter speed
Aperture-priority auto	Aperture

The metering method itself can not be changed while exposure lock is in effect.

ASee Also

If On is selected for Buttons > AE lock in the setup menu (0 146), exposure will lock when the shutter-release button is pressed halfway. For information on changing the role of the AE-L/AF-Lbutton, see Buttons > AE-L/AF-L button.

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