15EnA/M (Autofocus with Manual Override/AF Priority)To focus using autofocus with manual override (A/M):z Slide the lens focus-mode switch to A/M.x Focus.If desired, autofocus can be over-ridden by rotating the lens focusring while the shutter-release button is pressed halfway (or, if thecamera is equipped with an AF-ON button, while the AF-ON buttonis pressed); note that the ring must be rotated a short distance beforeautofocus is over-ridden. To refocus using autofocus, press theshutter-release button halfway or press the AF-ON button again.The Focus Limit SwitchThis switch determines the focus distance limits for autofocus.FULL: Select this option for subjects that may be closer than3 m (9.84 ft).∞–3 m: If your subject will always be at distance of at least3 m (9.84 ft), select this option for faster focusing.Zoom and Depth of FieldBefore focusing, rotate the zoom ring to adjust the focal length and framethe photograph. If the camera offers depth-of-field preview (stop down),depth of field can be previewed in the viewfinder (see page 210 for moreinformation).Note: Note that the focus distance indicator is intended only as a guide andmay not accurately show the distance to the subject and may, due to depthof field or other factors, not show ∞ when the camera is focused on a distantobject.ApertureAperture is adjusted using camera controls.NN