31
MOUNTING AND REMOVING LENSES
To mount a lens fitted with a meter coupling ridge, first make
sure that the camera’s meter coupling lever is in the normal
position (i.e., it protrudes from the camera’s lens mounting
flange). Position the lens in the flange so that the mounting
index on the lens is aligned with the mounting index on the
camera body. Then, twist the lens counterclockwise until it
clicks and locks into place. The lens’ maximum aperture is
automatically indexed to the camera’s meter as soon as it is
mounted.
To mount a lens not fitted with a meter coupling ridge, first
make sure that the camera’s meter coupling lever is locked
up out of the way by pushing the coupling lever release and
manually lifting the lever up. Mounting procedure is the same
as described previously. Remember that stop-down exposure
measurement is required for lenses of this type (see page 26).
To remove the lens from the camera body, press the lens re-
lease button and keep it depressed while twisting the lens clock-
wise as far as it will go. Lift the lens out when it comes loose.
Note: The Nikon Fisheye 6mm f/5.6 and OP 10mm f/5.6 can-
not be used with the Nikon FM, because the camera does not
have a provision for locking the mirror in the “up” position.
