Panasonic DC-G9M2 Operating Instructions - Page 179

Focus / Zoom - Selecting the AF Mode [Full Area AF] The camera selects the most optimal AF area to focus. When multiple AF areas are selected, all selected AF areas will be brought into focus. When the focus mode is set to [AFC], you can ensure that the focus stays on the subject by recording while keeping the subject within the Full Area AF area.  Specify the Subject to Bring into Focus When automatic detection is [ON], multiple subjects are detected. When the subject to be brought into focus is shown using the white AF area, you can change this to a yellow AF area. 179