ALocking Focus with the AF-ON Button

If desired, the autofocus can be assigned to a separate button in the Custom Settings menu, in which case focus will lock when the button is pressed and remain locked until the button is pressed again. The shutter can be released at any time regardless of the options selected for Custom Settings a1 (AF-C priority selection, 0 231) and a2 (AF-S priority selection, 0 231), and the in-focus indicator (I) will not be displayed in the viewfinder.

ASee Also

See Custom setting c1 (Shutter-release button AE-L, 0 236) for information on using the shutter-release button to lock exposure, Custom Setting f4 (Assign AE-L/AF-L button, 0 256) for information on choosing the role played by the AAE-L/AF-Lbutton.

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