Nikon D4S - Manual (Page 131)

109
N
The Electronic Rangefinder
The viewfinder focus indicator can be used
to confirm whether the subject in the
selected focus point is in focus (the focus
point can be selected from any of the 51
focus points). After positioning the subject
in the selected focus point, press the
shutter-release button halfway and rotate
the lens focus ring until the in-focus
indicator (
I) is displayed. Note that with
the subjects listed on page 107, the in-
focus indicator may sometimes be
displayed when the subject is not in focus;
confirm focus in the viewfinder before
shooting. For information on using the
electronic rangefinder with optional AF-S/
AF-I teleconverters, see page 404.
A
Focal Plane Position
To determine the distance between your
subject and the camera, measure from the
focal plane mark (
E) on the camera body.
The distance between the lens mounting
flange and the focal plane is 46.5 mm
(1.83 in.).
Focal plane mark
46.5 mm