Time Lapse - Nikon Motor Drive MD-12 Instruction Manual
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TIME LAPSE
Time lapse photography, the taking
of a series of
photo-
graphs over
a
period of time from
a fixed
position
,
is
easily accomplished
with your MO-12
equipped camera
and a suitable
timing device
.
Timing devices
for
time
lapse photography-the N ikon MT-l intervalometer,
for
example-
usually have two variable
controls: one
for
pulse duration
and
the
other
for interval
time.
Pulse
duration refers to the length of time that
the
triggering
pulse lasts. Interval time is the time interval between
pulses
and governs
the frequency
of
the photographs.
Additionally, the SoC
selector on
the MO-12 provides
you
with the option
of
taking
single
photographs
or
shooting
in bursts.
With the SoC
selector
set to
"S," one exposure will be
made for each triggering pulse, the motor winding
on
automatically at
the
end
of the triggering pu Ise
or
the
exposure,
whichever is longer. The interval time
can
be
set
at
any
duration, but
avoid setting
the
trigger
pulse
longer than the interval time. Otherwise
continuous or
erratic
operation will
occur.
With
the
SoC
selector set to "C,
"
if
the triggering
pulse's duration
is
longer than the
shutter speed set (or
0.25 sec.
in the
case of
the higher
shutter speeds),
bursts
will
be
fired at each
interval. For
example,
if the
shutter speed
is
set at
1/
1000 sec., and
the trigger pulse
duration is
2 sec., then approximately 7 exposures
will
be made
at each interval.
Generally
speaking you
will find that
operation
with
the SoC
selector set
to
"s"
and
the trigger pulse dura-
tion
set
between 0.1
and
0.25
sec.
is
advisable
for the
majority
of time
lapse
situations.
The variable
trigger
pulse duration
found on some
intervalometers is
a fea-
ture necessitated by the design
of
the
older generation
of
motor drives,
and
is largely redundant with
the
M 0 -12. Time lapse photography is not possible with
the shutter speed dial
set
to "B." Should you
attempt
this,
the
camera's
mirror may lock up, with
the shut-
ter remaining
open,
making operation impossible. To
restore normal
operation
in the event
of
th is happen-
ing, merely turn the
shutter speed
dial
away
from the
"B"
setting.
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