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If filming with the
shutter
half
open,
divide
exposure
times by
2.
(E.g.:
18
f.p.s.
= 1/130
second.
For single-frame filming, see
page 27).
6°
Setting emulsion-speed
values
Green
dot: set against
this
the
sensitivity
of the
emulsion used
(3~)
(black-and-white
or color
film).
Caution: For outdoor
filming with
"indoor" type
film, the
"daylight
speed" should be set opposite the green dot.
Example:
For Kodachrome "
type
A
film,
set
25 ASA for outdoor
filming
(daylight).
34
A correction
of
this calibration can be effected in the
proportion
of plus or minus 1/2 or 1 diaphragm
number.
-
In order to overexpose, set a film speed tending towards the
white
dots.
-
The
first
white dot gives you an overexposure of 1/2
diaphragm
value
(34):
-
The second white
dot
gives an
overexposure
of 1 full diaphragm
value (34).
-
In order to
underexpose, set
a film
speed
tending towards
the-
red
dots:
-
The first red dot gives an underexposure
of
1/2 diaphragm
value
(35).
-
The second
red dot
gives an
underexposure
of 1 full diaphragm
value
(35).
-r
Use of the automatic diaphragm
-
Set the master switch to
"Auto".
-
Take the camera in hand
and
depress the power-supply
switch.
According to the
amount
of light
received,
the
galvanometer pointer
will move in the viewfinder, giving a check of
automatic operation
35
21
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