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26.
Set
the
ASA/ISO
film
speed.
Turn
the exposure calculation dial
@ until the correct shooting situa-
ti
on
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
ASA
II
SO
film
speed scale
In the photograph, the shooting
si
tuation 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
1
00
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 t
he
shutter 'speed/mode selector dial
to
"A" or any shutter speed
se
tt
ing
from 1/1000 to 1/30sec
.;
when
us
in
g the Nikonos
IV
-A, set the
shutter speed
di
al to
"A";
in
th
e
case of the
Ni
konos
III
, set t
he
shutter speed dial to 1/60sec.
When using either the Nikonos-V or
Nikonos I
V-A
, the proper synchroni-
zation speed (1 /90sec.) will
be
auto-
matically set when t
he
S8
-102
's
power switch
is
turned
on
.
A·2. Select an f/stop with the
exposure calculation dial.
Se
lect
an
aperture from the range
of apertures that can
be
used at
th
e
existing fl
as
h-
to-subject distance.
tance.
For example, when the shooting
situati
on
mark (
..
: underwater
photography)
is
set at ASAIISO
100
and the flash-to-subject distance
is
1 m
(3
.3ft
),
the usea
bl
e aperture
ra
n
ge
is from fl2.8 to f/16.
13