Filter
Top Products
"AUTO"
-Non
-TTL Automatic Flash Mode
Wh
en the opti
on
al
Sen
sor Unit SU-
101
is us
ed
,
thi
s
mode provid
es
non-TTL automatic
fl
as
h operation. In
this mode, the sensor unit reads
th
e light reflected back
from
th
e s
ub
ject while the speedlight is firing and te
ll
s
th
e speedlight to tu
rn
its
el
f off when
th
e l
ig
ht output
is
sufficient for correct exposure. The
se
lector
di
al on the
back of t
he
SU
-
101
allows one of two aperture
se
ttings
to
be
selected according to the flash-to-subject distance
and t
he
shooti
ng
situation.
-
In
both the
TTL
and non-
TTL
automatic flash mode
s,
the 8B-
l02
emits
amounts
of
light sufficient for subjects having average reflectivity.
Therefore, correct exposure may not be obtainable
if the subject's
reflectivity
is
extremely low
or
high.
Shooting
Mode
Selector ®
The
shooting mode selector 5
ha
s five click-stop set-
tings. The shooting modes that can
be
used with specific
cameras are listed
on
page 28.
"TTL"
position-TTL
(through-the-lens) Automatic
Flash Mode
This mode, which can
be
used only in conjunction with
th
e Nikonos-V camera, a
ut
omatica
ll
y contr
ol
s the fl
as
h
exposure
Through-The-Lens (TTL). In t
hi
s mode, the
Nikonos-V's 8PD (silicon photodiode) reads the light
pa
ss
ing
through the lens and automatically signals the
88
-
10
2 to turn itself off when the exposure
is
correct.
Because the range of usea
bl
e apertures
is
larger (trom
f/2.8 to f/22 when using ASAII
SO
100
film) than wi
th
non-TTL flash,
you
can shoot at a variety of flash-to-
subject distances.
The
farther the subject, the more
light emitted
by
the flash unit; the closer the subject,
the
le
ss light given off.
In
addition, the TTL mode makes
daylight fill
-i
n flash and close-up photography easier
than eve
r.
-
The
useable film speed range
fo
r T
TL
operation
is
from ASA/I
SO
25
to
400. For information about the apertures that can be used at
va
rious
film speeds, see page
23.
-
TTL
operation
is
not possible with the Nikonos
IV-A
or
III
or
when the
Nikonos-V's shutter speed/mode selector dial
is
set
at
M90 (lI90sec.J
or
B(Bulb).
-
Even
if
the Nikonos-V's shutter speed/mode selector dial
is
set from
1/30 to
1/I000sec
.,
TTL
operation
is
not possible when: the sync cord
is
not securely connected, the ASA/ISO film speed
is
set beyond
ASA
/180 400,
or
the batteries are completely exhausted.
"MFULL
",
"M1/4"
and
"M1/16"
-Manual
Flash
Modes
Manual control is very convenient when the correct
exposure cannot
be
obtained through
non-
T
TL
auto-
matic operation.
The
S8-
10
2
ha
s three manual control
mod
es
for
se
lecti
on
accordi
ng
to th
e
fl
as
h-to
-s
ubject
di
stance and
th
e shooting
si
tuation.
The
gu
ide numbers
are
GN
32
(
16
) at
th
e "MFULL"
po
sition,
GN
16
(
8)
at
" M1/
4,"
a
nd
GN
8 (4) at " M1/16" (when us
ing
ASA/I
SO
100
film.
Th
e guide numbers
in
parentheses are for
und
e
rw
ater photography
).
To
determine the correct
ap
ertur
e,
u
se
th
e
ex
po
sure calculation
di
al or perform
the calculations yourself (see pages
25
to
2
6)
.
21