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TIPS
ON
SPEEDLIGHT
PHOTOGRAPHY
1.
The
flash-to-subject coupling distances and use-
able apertures indicated by the exposure calcula-
tion dial are for clear-water shooting. Therefore,
the correct exposure will
be
different if the water
is
muddy or has floating particles, and some expo-
sure compensation must be made.
2.
In
shallower depths with natural lighting, overex-
posure may occur when shooting
in
the automatic
mode.
To
prevent this, use the smallest aperture
(the numerically largest f-number) possible or turn
off the speedlight
and
use
only natural lighting.
When shooting with the Nikonos-V, the correct
shutter speed for the lighting conditions
is
dis-
played
in
the viewfinder. (For more information,
refer to the camera's instruction manual.)
3.
When
the bracket
and
arm are attached to the
Nikonos
IV-A,
certain optical finder models for
older UW-Nikkor 15mm
fl2.B lenses cannot
be
attached. If this presents a problem for
you
,
authorized Nikon dealers
and
service centers can
perform the necessary modifications.
4.
One
of the benefits of using a speedlight under-
water
is
that
it
restores natural colors
to
subjects
by
removing the water's bluish cast. Occasionally,
though,
you
may want to include that bluishness
in
your photos. Normally, this
is
rather difficult to
do because the flash unit renders the background
either too light
or
too dark.
To
capture the bluish-
ness,
you
must eliminate the difference
in
light
levels between the subject (illuminated
by
the
speedlight)
and
the background (illuminated by
natural
light}-a
difficult task
in
the manual flash
mode.
The
easiest way to balance the light levels
is
to
use
the Nikonos-V
and
the 88-102
in
the
TTL automatic mode
and
follow the procedures
explained
in
"Daylight Fill-In Flash Photogra-
phy
" (page 30).
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