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FLASH
PHOTOGRAPHY
lC
printed
circuit
board
Light
path
Shutter
curtain
Metering
reflector
Except at shallow
depths,
a
speedlight
is
a
must
when
shooting
underwater
because
it restores the subject's
natural
colors.
A
speedlight
is also convenient
as a
main
light
source
at
night
and
in dim
light as
well
as
a supplemental
light
source
to
f ill in
shadows
in
daylight.
A number of different
speedlights
can be
used
with
the Nikonos-V,
including the
new
dedicated
speedlight,
the SB-103
or SB-102,
and
the SB-101-both
of
which
can
be used
both
on
land and
underwater.
When
shooting
on
land,
you
can also
use Speedlights
SB-19,
SB-18,
SB-168,
SB-15,
and SB-E.
To
simplify
flash
photography
even
further, the
Nikonos-V
features fully automatic
through-the-lens
(TTL)
f lash exposure
control.
While the shutter
is
open, a silicon
photodiode
(SPD)
at the bottom
of the
shutter
box
reads
the
light as
it
reflects
off
the
film;
when the
film
has received
enough
light
for correct
exposure,
the
flash
unit
turns off
. TTL f lash exposure
control
is
operable
with the
SB-103
or SB-102,
which
connects
directly
to the camera,
and the SB-18, SB-
168
and SB-15,
which
connect
to the camera
through
a
sync
cord.
The Nikonos-V
can also be
used
with a
variety
of
Nikon
TTL Multiple
Flash
photographic
accessories.
Before shooting,
check
that the aperture
setting
is
adequate
for the
flash-to-subject distance
and the
guide
number
of the speedlight
in use,
50