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26.
Set the ASA/ISO film
speed.
Turn the exposure calculation dial
@
until the correct
shooting situa-
tion mark
i@i
is opposite the ASAIISO
speed
of the film in
the camera.
Choose
which
mark to use
accord-
ing to the
shooting situation:
a.
.
On-land photography
~
: On-land photography with the wide-flash
adapter
. .
:
Underwater photography
W
:
Underwater photography with the wide
-
. .
flash adapter
ASAIISO
film
speed scale
In the photograph, the
shooting
situation mark (
. .
:
underwater
photography) index is aligned with
ASAIISO
100.
•
For TTL
operation with the Nikonos-V
camera, the useable film speed
range
is
from
ASAIISO
25 to 400.
•
The ASAIISO
film speed settings are only for
determining
shooting distances and useable
apertures; the exposure calculation
dial
is
not electrically connected to the flash unit.
.
'ntermediate
ASAIISO
film
speed settings
are indicated with dots:
25
50
100
200
400
800
1600
•
• •
•
•
•
•
• •
•
• •
•
•
•
•
• •
•
32
40
64 80
125
I
250
j
160
320
·Step
28
is divided into two sections ac-
cording to the camera and the shooting mode
in
use.
The
"A"
steps are for TTL automatic
opera-
tion with the Nikonos-Vcamera; the
"8" steps
are for non-
TTL
automatic operation with the
Nikonos -V, Nikonos /V-A, or III (the optional
Sensor Unit SU-101
is required
for non-TTL
automatic
operation).
For
information
about manual flash
operation,
see pages 25 to 26.
500
j
640
1000
j
1250
28A.
TTL Aut<?matic
Operation.
A·1. Set the shooting mode
selector switch
®
to
"TTL."
27
Set the shutter
• speed on the
camera.
When using the
Nikonos-V,
set
the
shutter 'speed/mode selector
dial
to
" A"
or any shutter
speed
setting
from 1/1000 to
1/30sec.;
when
using the Nikonos
IV-A,
set
the
shutte
r speed dial
to
"A";
in the
case of the Nikonos
III
,
set the
shutter speed dial
to
1/60sec.
When using either the Nikonos-V or
Nikonos
IV-A,
the proper
synchroni-
zation
speed
(1
/90sec.)
will be auto-
matical ly
set
when the
S8
-102
's
power
switch
is turned on
.
A·2. Select an f/stop with the
exposure calculation dial.
Select an aperture from the range
of apertures that
can
be used at the
existi ng flash-to-subject distance
.
tance
.
For example
,
when the
shooting
situation mark
(
. .
: underwater
photography) is
set at
ASAIISO 100
and the flash-to-su bject distance is
1 m
(3
.3ft
), the useable apertu re
range is from fl2 .8 to f/16
.
13
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