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Basic
Tips
on
Underwater
Flash
Photography
The basic aspects of underwater flash photogra
ph
y will
be
reviewed
in
this sectio
n.
T
he
Role
of
th
e
Speed
li
gh
t .
..
The primary purpose of the Speedlight underwater
is
to accurately reproduce
the subject's colors. At a depth of three meters
(10
feet), the
red
content of the
subject will begin to
be
absorbed
by
the water, resulting
in
a photograph strong
in
blue content. This phenomenon, known as " Selective Light Absorption
,"
increases
as
you go deeper underwater and move farther from the subject.
Usi
ng
a Speedlight effectively will restore the lost color to your photographs
and create better contrast.
Try
to stay as close as possible to your subject to reduce the amount of water
between your camera and subject. This will result
in
a sharp, colorful
photograph.
Taking
photographs
highlighting
the
blue
of
the
sea
. . .
Try
to shoot at
an
upward angle to allow the background ambient light to enter
into the picture.
In
TIL
flash mode, select the aperture value to get the correct exposure while
aiming the camera at the blue background. Then set the aperture dial.
In
this condition,
you
can take photographs with correct exposure and a natural
blue background. The main subject can be reproduced in vivid colors by the
light from the Speedlight.
-In
manual flash mode, select the combination of shutter speed and aperture value
to
obtain the correct ex
po
s
ure
against the background.
46