300 Menu Guide > A Custom SettingsThe following options are available:Option Descriptiont Power aperture(open)Aperture widens while the control is pressed.Use in combination with Custom Setting g2(Custom controls) > Fn2 button > Poweraperture (close) for button-controlled apertureadjustment.q Power aperture(close)Aperture narrows while the control is pressed.Use in combination with Custom Setting g2(Custom controls) > Fn1 button > Poweraperture (open) for button-controlled apertureadjustment.i Exposurecompensation +Exposure compensation increases while thecontrol is pressed. Use in combination withCustom Setting g2 (Custom controls) > Fn2button > Exposure compensation − forbutton-controlled exposure compensation.h Exposurecompensation –Exposure compensation decreases while thecontrol is pressed. Use in combination withCustom Setting g2 (Custom controls) > Fn1button > Exposure compensation + forbutton-controlled exposure compensation.n Subject trackingPressing the control during auto-area AF enablessubject tracking; the focus point will change to atargeting reticle and the monitor and viewfinderto subject-tracking displays.• To end subject-tracking AF, press the controlagain.b Framing griddisplayPress the control to turn the framing grid displayon or off.K Select centerfocus pointPressing the control selects the center focuspoint.A AF-ON Pressing the control initiates autofocus.F AF lock only Focus locks while the control is pressed.E AE lock (Hold)Exposure locks when the control is pressed, andremains locked until the control is pressed asecond time or the standby timer expires.