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Housing shown with
deflector installed.
Deflector
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A diffuser and deflector are
included with the housing. The
diffuser is white transparent
plastic. The deflector is also white
but is not transparent and has a
decal on the front.
To install the diffuser or deflector
spread the port clamp at the spring
end and slide over the lens port.
The white plastic should be placed
in front of the camera flash. The
port clamp should be pushed back
against the front of the housing.
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The diffuser should be installed when using the camera’s built in
flash. When shooting with the camera’s built-in flash at
approximately 2 feet (0.6 m) or less, the lens port on the
housing blocks a portion of the light from the camera’s built-in
flash, creating a shadow in the lower left of the photo. To
eliminate the shadow zoom the lens between 1/3 and 1/2 of its
full telephoto range.
(You can test this above water)
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The deflector should be installed when using an external strobe
such as the DS51 or DS125 Substrobe and EV Controller. The
deflector will redirect the camera’s flash to the EV Controller
which controls the external strobes output.
Diffuser/
Deflector
material
Port Clamp
Spring
Spread to Install
This edge against
housing
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External strobes offer several advantages over using the
camera’s built-in flash. External strobes move the flash away
from the camera lens which helps reduce backscatter. They also
expand lighting options to achieve the best lighting for
different subjects and lenses. A strobe such as the DS51 is ideal
for use with macro and most standard camera lenses up to
28mm. When an optional wide angle lens is added a strobe such
as the DS125 is needed as it has a greater angle-of-coverage. A
second external strobe can be added to fill the shadows and
produce more realistic photographs.
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DSS5511 SSuubbssttrroobbee
The Substrobe DS51 covers the equivalent of a 28mm lens. It is
the ideal choice when using only the camera lens or the camera
lens with a macro accessory lens.
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The Substrobe DS125 covers the equivalent of an 18mm lens,
100 degrees (with diffuser). It is the ideal choice when using
accessory wide angle lenses greater than 28mm.
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The C-740 cameras can use the
cameras built-in flash to light
subjects underwater.
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For external flash the DS51 or DS125
can be used with the EV- Controller
in slave mode. In slave mode the
camera's built-in flash is used to
trigger the EV-Controller.
The EV-Controller provides 10
manual power settings in 1/2 stop
increments.
Substrobe
DS51
EV Controller
Ball Socket
Arm