Nikon MD-3 - Page 15

FRAME
COUNTER
The
frame counter
on the motor drive shows the number
of
unexposed frames
remaining on a roll of
film. lt is
calibrated in even numbers from
0
to 40. The
frame
counter
preset
wheel can be rotated in
either
direction.
When
the counter
reaches
zero,
the motor
will
stop
auto-
matically. lf
you
want
a certain number of frames
to be
set for continuous
firing,
just
set the counter to
the de-
sired number.
This operation can be done repeatedly.
The
frame
counter on the camera also continues to oper-
ate when
the motor drive
is attached, so
you
can easily
see how many
exposures
you
have left.
o
Be
careful to set the number of frames
correctly. lf
you
overestimate the
number remaining
on a roll of
film,
the
result may
be
that
the motor will
pull
the
film
off the supply spool or
damage its
perforated
edges,
since the motor
will
continue
to operate until
the
counter reaches zero.
o
Turning the frame
counter's
preset
wheel
away from
its zero
position
when the motor drive is removed from
the camera
may occasionally result in the motor
drive
running
freely until the counter resets itself
to zero.
This is
a normal operating condition,
caused by the
end of the film being
reached
before the motor drive
completes its advance
cycle,
and is no case for concern.
When
the motor drive is reattached to thecamera,
this
condition
will be corrected automatically.
o
The
motor
will
not
operate when the
counter
is
at
zero.
Always
check the counter
before
starting
to
shoot, especially
at the beginning
of
a
roll.
I
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