Installation in MARELUX underwater photo housing
▪
Open underwater housing. Using hex wrench unscrew 2
bolts from vertical plastic podium (camera support) bottom side.
Delete the podium from the housing.
▪
Insert CR2032 batteries into TTL-Converter. Before
installation check that “plus” terminal of each battery is in Up
position.
▪
(Optional).
In case of using Electric Sync cord
synchronization, connect an electric bulkhead cable plug into Ci-11
socket on the board.
▪
Install TTL-Converter to its place. Carefully insert both
LEDs into optical holes of the housing. Screw 2 bolts, fixing the
plastic frame upper part.
▪
Install vertical plastic podium back to its place. Screw 2
bolts, fixing the podium.
Optional Accessories for MARELUX housing
▪
UW Technics Nikonos style Bulkhead (M14 screw) with cable and Ci-11 connector.
▪
UW Technics Ikelite style Bulkhead (M14 screw) with cable and Ci-11 connector.
▪
UW Technics S-6 style Bulkhead (M14 screw) with cable and Ci11 connector.
▪
Electric Bulkheads are optional products and must be purchased separately.
External cable connections for underwater strobes
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TTL-Converter maintains synchronization for underwater strobes by Fiber Optical cable and by electric sync cord as
well, separately or even simultaneously.
▪
Maximum 2 Fiber Optic cables can be used (via housing optical bulkheads). It is possible to connect 2 underwater
strobes.
▪
Maximum 1 electric sync cord can be connected to the TTL board (via housing electric bulkhead).
▪
Dual electric sync cords
(“Sea&Sea”, “Ikelite”) are supported by TTL-Converter as well. Using a dual sync cord, it is
possible to connect 2 underwater strobes.
Initial Settings
▪
Set TTL-Converter onboard rotary switch according the underwater strobe type:
o
0
–
Manual Mode
(TTL protocol is disabled)
o
1
–
Inon Z-240
o
2
–
Sea&Sea YS-D1
o
3
–
Sea&Sea YS-D2
(strobe version «Made in China» only)
o
4
–
Sea&Sea YS-250
o
5
–
Ikelite DS-161, DS-160, DS-125
o
6
– Inon Z-330
o
7
– Retra Pro
(including HSS support)
o
8
– Subtronic Pro-160
o
9
– Subtronic Pro-270
▪
Set and check camera settings before underwater shooting:
-
Set Camera mode (
“M”, “P”, “A”, “S” etc.), dependently of preferences. For underwater shooting it is recommended to
use
“M” mode, when user set fixed aperture and shutter speed manually.
-
Set
appropriate Exposure Metering (“Evaluative”, “Partial”, “Spot”, “Center-weighted) according your shooting
conditions. Right type of Exposure Metering is the key setting for accurate TTL work. In case of wrong setting, the shot
may be overlighted, or underlighted.
-
Set “Mechanical” shutter type for both 1-st and rear curtains. All other options regarding shutter type in camera menu
must be set for “mechanical” type too.
-
Set camera’s “Flash Exposure Compensation” (and “Exposure Compensation”) to “0 ev”, as initial setting.
-
Set appropriate ISO. For most of cases it is recommended to use ISO 20
0….400 for best resolution and TTL accuracy
underwater. For TTL shooting with Retra Pro strobe recommended to use ISO 400 and higher.
-
Set Aperture and Shutter Speed according real underwater conditions and shooting task.
-
Shooting in TTL mode with casual underwater strobes, maximum mono-flash sync speed for DSLR cameras is about
1/250.
-
Shooting in manual mode with Retra Pro strobe, sync speeds are available also in HSS range, - up to 1/8000.
