Ikelite C-740 Diffuser & Deflector Installation, Diffuser and Deflector, Using External Flash

Port Clamp

Spring

Spread to Install

Diffuser & Deflector Installation

Deflector

Housing shown with deflector installed.

Diffuser and Deflector cont.	This edge against	Diffuser/
	housing
A diffuser and deflector are		Deflector
included with the housing. The		material
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.

Diffuser

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)

Deflector

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.

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Using External Flash

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.

DS51 Substrobe

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.

DS125 Substrobe

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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Using Flash with C-740 The C-740 cameras can use the cameras built-in flash to light subjects underwater.

Using External Flash

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

Ball Socket

Arm

EV Controller

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