Nikon EDG 8x42 DCF Mode D'emploi page 15

6 When the subject changes, refocus the new subject by rotating
the focusing ring ① .
・Rotate clockwise to focus on a more distant subject.
・Rotate counterclockwise to focus on a closer subject.
7 When focusing is not necessary, set the focusing ring ① in
the middle position (unlocked), so that it doesn't change the
focusing position even if you accidentally touch it.
15