The AF‑ON button can be used for focus in autofocus mode.

  • You can choose the role assigned to the AF-ON button. Use Custom Settings f3 [Custom controls] in the Custom Settings menu to choose the role played by the button during photography.

The AF-ON Button for Vertical Shooting

The AF-ON button performs the same function, but can only be used when the vertical shooting shutter-release button lock is unlocked.