2Lock focus.

AF-A and AF-C focus modes: With the shutter-release button pressed halfway (q), press the AE-L/AF-L button (w) to lock both focus and exposure (an AE-L icon will be displayed in the viewfinder;

080). Focus will remain locked while the AE-L/AF- L button is pressed, even if you later remove your finger from the shutter-release button.

Shutter-release button

AE-L/AF-L button

AF-S focus mode: Focus will lock automatically when the in-focus indicator appears, and remain locked until you remove your finger from the shutter- release button. Focus can also be locked by pressing the AE-L/AF-Lbutton (see above).

3Recompose the photograph and shoot.

Focus will remain locked between shots if you keep the shutter-release button pressed halfway (AF-S) or keep the AE-L/AF-Lbutton pressed, allowing several photographs in succession to be taken at the same focus setting.

z

Do not change the distance between the camera and the subject while focus lock is in effect. If the subject moves, focus again at the new distance.

AThe AE-L/AF-L Button

The Buttons > AE-L/AF-L button option in the setup menu (0 146) controls the behavior of the AE-L/AF-Lbutton.

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Nikon D3100 2 manual Lock focus, Recompose the photograph and shoot, AE-L/AF-L Button