Installation
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Deinstall original Seafrogs Leak Detector and sensor strip from the
housing.
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Install new sensor strip to the bottom, instead of original sensor. The
sensor strip has adgesive tape on the back side.
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Unscrew the nut and deinstall the original Seafrogs electric bulkhead
from the housing. Keep the original nut for further installation of Optical
bulkhead.
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Before Optical bulkhead installation, please check both o-rings
condition and grease them by silicone lubricant. Install Optical bulkhead to it’s
place and screw the nut (use original Seafrogs nut from electric bulkhead).
Connect Optical bulkhead cable to the TTL-Converter 2-pin socket.
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(Optional):
In case of using Electric Wire Synchronization, install
UWTecnics electric bulkhead (Nikonos or Ikelite style bulkhead) the same way
and connect the cable to 3-pin socket on the TTL-Converter board.
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Connect Leak Detector sensor cable to TTL-Converter boar 2-pin
socket (the last right socket on the board).
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Insert batteries into TTL-Converter. Before installation check that
“plus” terminal of each battery is in Up position.
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Make few shots, testing TTL flash control work with the camera and
underwater strobe.
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Test Leak Detector alarm by touching the sensor with wet finger.
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Glue TTL-Converter board on the housing wall by double-side aghesive tape, or by a drop of glue.
Optional Bulkheads
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UWTechnics Optical Bulkhead (Seafrogs style mount) with cable and 2-pin connector, - included with standard kit.
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UW Technics Nikonos style Bulkhead (Seafrogs style mount) with cable and 3-pin connector.
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UW Technics Ikelite style Bulkhead (Seafrogs style mount) with cable and 3-pin connector.
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Electric Bulkheads (Nikonos, Ikelite style) are optional products and must be purchased separately.
External cable connection to underwater strobes
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TTL-Converter maintains synchronization for underwater strobes by Fiber Optical cable connection and by electric
cable connection as well.
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A single fiber optical cable can be used for the best optical signal transmission (via optical bulkhead). It is also possible
to connect 2 underwater strobes using a dual fiber optical cable (only HowShot 613L Dual cable is recommended).
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A single electric sync cord can be used via electric (Nikonos / Ikelite) bulkhead.
Dual electric cord (“Sea&Sea”) can
used as well. Using a dual sync cord, it is possible to connect 2 underwater strobes simultaneously.
Initial Settings
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Set and check camera settings before underwater shooting:
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Set “Mechanical Shutter” type in camera menu. You also can use “e-Front Curtain Shutter”. But don’t set fully
Electronic Shutter by menu, it does not supported by this TTL system.
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Set Camera mode (“M”, “P”, “A”, “S” etc.), as is your preference. For underwater shooting it is recommended to use “M”
mode, so the underwater photographer can control Aperture and Shutter Speed manually.
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Set Aperture and Shutter Speed according to the actual underwater conditions and shooting task. Do not exceed 1/250
shutter speed (1/250 is maximum “sync speed”) when using mono-flash underwater strobes.
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Set appropriate Exposure Metering (“Multi”, “Spot”, “Center”) according to the shooting conditions. The right type of
Exposure Metering is the key setting for accurate TTL work. In the case of wrong setting, the shot may be over
exposed, or under exposed.
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Set camera’s “Flash Exposure Compensation” (and “Exposure Compensation”) to “0 ev”, as initial setting.
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Set appropriate ISO. Recommended to use ISO 100
…
.400 for the best resolution and TTL accuracy underwater.
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Use recommended apertures F8-F16 for Wide-angle underwater photo, and F16-F22 for Macro photo.
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Use other settings recommended by your camera User’s Manual.
Shooting in TTL mode
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Set TTL-Converter onboard rotary switch according your strobe type:
Ø
0
-
Hardwire
Manual Mode
Ø
1 - Inon Z-240
Ø
2 - Sea&Sea YS-D1
Ø
3 - Sea&Sea YS-D2
Ø
4 - Sea&Sea YS-250, Subtronic Pro-270
Ø
5 - Ikelite DS-161, Ikelite DS-160
Ø
6 – Inon Z-330
Ø
7 – Retra Pro
Ø
8 – Subtronic Pro-160
Ø
9 – Inon S-2000
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Set main dial switch on the underwater strobe body to TTL mode. Please refer to strobe’s User Manual to choose
appropriate mode (Z330, Z240 set to “S-TTL”, YS-D1/D2 set to “DS-TTL”, YS-250/DS-161/DS160 set to “TTL”).
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Set the dial (+/-Ev correction) on the underwater strobe body to “0 ev” position, as initial setting.
