There are two power zooming speeds.
If
either of the power zoom
control
knobs is
pressed
only lightly, the focal length
will
change slower than
if
the knob is pressed
more
firmly. Tracking and zooming appears
still smoother on the screen if you film
these shots as 24 frames per second.
Manual zoom
control
(on Nizo 801)
A special feature of this Nizo model is the
ability to switch ,off the automatic
power
zoom and vary the focal leng·th with a lever
(supplied
with the camera). Hand zooming
enables you to determine the speed of
apparent
movement accurately, and also
permits very rapid zooms during a shot by
moving the
lever round
as
fast as possible.
The lever should be screwed to the
mount-
ing on the focal length scale. The
power
zoom mechanism is switched
off
(and the
lever becomes easier to move) when the
mark on the
black knurled ring between the
focal length scale and the camera body is
turned
fully
clockwise
until opposite the 0
mark on the body.
Camera running speeds
Slow
motion
facilities (filming speed
switch 1)
The
normal running speed of the camera
is 18 frames
per
second, each frame being
exposed
for
'/
43rd
of a second. Any
filming
speed above
18
frames per second setting,
will result in a slow motion effect, and all
filming
speeds below
18
frames
per
second
wil'l
produce
a speeded-up effect if
projec-
ted at the normal setting.
With the aid
of
filming speed switch
1,
you
can change from the standard running
speed of
18
frames per second to the
slow
motion
speeds of 24
or
54 frames per se-
cond
. If film
shot
at 24 frames per second
is
projected
at
normal speed, all move-
ments
will appear '
/J
rd
slower. This is
not
the same as genuine slow motion,
but
is
useful
if
the camera
is
moved over a long
distance,
for
example during a long pan
or
when filming from a
car
being driven along
a rough road.
54 frames
per
second is a genuine slow
motion speed. When projected
at
18
frames
per second, scenes
win
be prolonged to
three times
their
original length. Fast move-
ments
filmed in this way can be studied at
leisure
during
projection. Since one se-
cond's
filming time yields three seconds
on the screen,
filming at the slow motion
speed is sometimes a way to gain a better
impression of sudden
or
very
brief
events.
The automatic
slow motion device on
your
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