Rotate the rear command dial to adjust aperture, select options in the quick menu display, choose the size of the focus frame, zoom in or out in full-frame or thumbnail playback, or select a scene in auto mode.
Press the center of the rear command dial to zoom in on the selected focus area or in playback mode to zoom in on the active focus point. In manual focus mode, you can choose a focus display by pressing and holding the center of the dial.
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