20Basic PhotographyAF /AE LockFocus and exposure are locked when the shutter-release button is pressed halfway,and remain locked while the shutter-release button is held in this position (focuslock). Focus lock can be used to take pictures of off-center subjects or in situationsin which the camera is unable to focus using autofocus.4Press shutter-release button rest of waydown to take picture.Take picture3Focus and exposure are locked while shut-ter-release button is pressed halfway. *Recompose picture2Check that focus indicator glows steadi-ly, indicating that subject is in focus.Check focus indicator1Position subject in center of frame andpress shutter-release button halfway.Focus* Do not change distance between camera and subject while focus lock is in effect. Ifsubject moves, release shutter-release button and focus again at new distance.
