86 Shooting ControlsUse the sub-selector as a joystick toselect the focus point, or press the centerto lock focus and/or exposure.Focus-Point SelectionUse the sub-selector to select the focuspoint in the shooting display. Focus-point selection is not available whenauto-area AF is selected for AF-areamode (0 54).Autoexposure (AE) LockPressing the center of the sub-selector locks exposure at thecurrent setting. AE lock can be used to recompose shots aftermetering a subject that will not be in the selected focus area inthe final composition, and is particularly effective with spot orcenter-weighted metering.Focus LockThe center of the sub-selector can be used to lock focus on thecurrent subject when AF-C is selected for focus mode. Whenusing focus lock, choose an AF-area mode other than auto-areaAF.The Sub-SelectorFocus point
