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I
Shooting
with
sunlight
Good underwater
photography
requires
good
lighting,
such
as sunlight. But the
amount of sunlight that
enters the
water
depends
upon the
position
of the sun.
The maximum amount of light enters
the water
when
the sun
is
directly
overhead.
lf the angle between
the
sun and the
water's surface
is at least
45o,
though,
more than 90% of
the sun's
light
enters
the
water.
(The
chart below
shows the
relationship of the angle
between the sun
and water and the
amount of sunlight
that enters
the water.) For best
results,
pick
a calm,
sunny day
and dive between
the hours of
'10:00a.m.
and
2:00p.m.
lf
there are waves
and
swells,
or
if
the
waves break
against rocks
nearby and
foam,
less
sunlight
will
enter
the water.
(%)
Amount
of
100
incoming
light
80
| 5" 30"
45"
60' 75"
90'
Angle of
the sun
I
Shooting
distance
and subiect
contrast
I
The
greater
the camera-to-subject
distance
under-
I
water,
the
less the subject
contrast.
Small
particles
of
olankton
or dirt
that
float
in the
water decrease
the
I
subject
contrast
to such
a degree
that,
even under
I
iOeat conditions,
it is next to
impossible
to take
a sharp
photo
when the
camera-to-subject
distance
is
more
.
than
Sm
(tOtt).
For best
results,
get
as close
to the
I
subject
as
possible
and use
the
widest angle
lens
you
I
nave.
Be careful,
too,
when using
a speedlight
that
I
you
aren't
so
far
f rom the subject
that suff
icient
light
I
cannot
reach
it.
I
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