FOCUS LOCK
Focus lock is used for off-center subjects outside the focus frame. Focus lock can also be used when a special focusing situation prevents the camera from focusing by allowing the camera to be focused on a object at the same distance as the subject.
Center your subject in the wide focus frame, then press the shutter-release button partway down to lock focus (1).
The focus is locked when focus signal appears in the viewfinder. If the signal blinks, the camera was unable to focus; repeat the procedure.
The exposure is locked with focus. Releasing the shutter button cancels focus lock.
Continue to hold the shutter-release button partway down and compose the picture.
Press the shutter-release button all the way down (2) to take the picture.