Optoelectronic TTL converter (for SONY) for NAUTICAM underwater housings NA- NA-A7 II, A7R III, A7RIV, A9, A9 II. Compatible underwater flashes: Inon Z-330 / Z-240 / S-220, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS160 / DS160 DS-125, Subtronic Pro-270 / Pro-160, RetraFlash PRO TTL and HSS on the RetraFlash Fantastic TTL accuracy allows photographers to relax and rely entirely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üvia the TTL converter's built-in rotary switch. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be adjusted with the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch. Full compatibility with all SONY mirrorless cameras, regardless of model and TTL protocol version.

Ninkonos-style bulkhead with 6-pin MicroMatch connector. For Nauticam underwater housing. For use with internal TTL converters and manual triggers.

Optoelectronic flash trigger for Canon cameras in Nauticam and Hugyfot housings. The world's first TTL converter that is compatible with all Canon DSLR and DSLM cameras, regardless of model or TTL protocol version. Compatible underwater flashes: Inon Z330, Z240; Ikelite DS-161, DS-160; Sea&Sea YS-D1, YS-D2 (made-in-China), YS-250, RetraFlash PRO and Prime (including HSS support). The product supports 4 pcs TTL outputs: 2 pcs optical bulkheads + 2 pcs electrical bulkheads can be connected. TTL converter has automatic on/off, incredible battery life 5 years. Easy installation by the user. TTL and HSS on RetraFlash Fantastic TTL accuracy allows photographers to relax and rely completely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üvia the TTL converter's built-in rotary switch. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be set using the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch.

Optoelectronic TTL-Converter for CANON for NAUTICAM NA-R6-II underwater housing. Compatible housings: Nauticam NA-R6II. Compatible underwater flashes:Inon S-220 / Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-270 / Pro-160, Retra Pro X (including HSS). The product supports 4 pcs TTL outputs: 2 pcs optical bulkheads (installed) + 2 pcs electrical bulkheads (optional) can be connected. TTL converter has automatic on/off, incredible battery life 5 years. Easy installation by the user. TTL and HSS on RetraFlash Fantastic TTL accuracy allows photographers to relax and rely completely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üvia the TTL converter's built-in rotary switch. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be set using the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch.

HSS Optoelectronic TTL-Converter for CANON R7 for NAUTICAM NA-R7 underwater housing. Compatible housings: Nauticam NA-R7. Compatible underwater strobes: Inon Z-330 / Z-240, Sea&Sea YS-D1 / YS-D2 (China) / YS-250, Ikelite DS161 /, DS160, Subtronic Pro-270 / Pro-160, Retra Pro (including HSS).

Optoelectronic TTL Converter for NIKON for ISOTTA housings of former years, including 2 pcs Optical Bulkheads with built-in LED. Compatible underwater strobes: Inon Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-270 / Pro-160, Retra Pro (including HSS). Two optional ISOTTA electric bulkheads are supported as well, onboard sockets have ISOTTA style pinout. This TTL board is purposed for installation instead of Isotta special shape commutation board. Such type of Isotta housings has a special curved shape milled recess in metal, the same curved shape has the TTL-converter board. Check your housing regarding such installation version before TTL system purchasing.

TTL-Converter for PANASONIC GH5 for NAUTICAM NA-GH5 underwater housing. New style Hot Shoe (5 pins) of m4/3 system. TTL-Converter does not need a battery. Compatible housings: NA-GH5. Compatible underwater strobes: Inon Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-160, Retra Pro X (HSS is NOT supported).

Optoelectronic TTL converter (for SONY) in NAUTICAM underwater housing NA-A7C. Compatible underwater flashes: Inon Z-330 / Z-240 / S-2000, Sea&Sea YS-D1 / YS-D2 (made in China) / YS-250, Ikelite DS160 /, DS160, Subtronic Pro-270 / Pro-160, RetraFlash PRO TTL and HSS on the RetraFlash Fantastic TTL accuracy allows photographers to relax and rely entirely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üvia the TTL converter's built-in rotary switch. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be set using the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch. Full compatibility with all SONY mirrorless cameras, regardless of model and TTL protocol version.

Nikonos style M14 Bulkhead with 4-pin MicroMatch connector for NAUTICAM underwater housings. Bulkhead incorporates flat cable with 4-pin MicroMatch plug. Product is purposed for usage with UWTechnics TTL-Converters. M14 thread bulkhead can be also installed into M24 hole using M24-M14 adapter (NA25097)

Bulkhead incorporates built-in powerful LED and cable with Ci-11 plug. Optical socket connector - Sea&Sea style. For installation into M16 screw holes (holes for Isotta electric bulkheads). For usage with UWTechnics TTL Converters.

TTL converter (für Canon) for Marelux underwater housings: Compatible underwater flashes Inon S-220 / Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-270 / Pro-160, Retra Pro. Convenient parking bracket for hot shoe connector.  TTL and HSS on the RetraFlash. Fantastic TTL accuracy allows photographers to relax and rely entirely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üt via the TTL converter's built-in rotary switch. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be adjusted with the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater strobes. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch. Full compatibility with all SONY mirrorless cameras, regardless of model and TTL protocol version.

The world's first TTL converter that is compatible with all Nikon DSLR cameras, regardless of model and TTL protocol version. Compatible underwater strobes: Inon Z-330, Z-240, Ikelite DS-161, DS-160, Sea&Sea YS-D1, YS-D2 (made in China), YS-250., RetraFlash PRO and Prime (includes HSS support). Compatible housings: NA-Z9, NA-Z7 / Z6, NA-D4, NA-D4S, NA-D5, NA-D500, NA-D600/D610, NA-D750, NA-D7200, NA-D800, NA-D810, NA-D850, ...etc. The product supports 4 TTL outputs: 2 optical + 2 electrical ports . TTL converter has automatic on/off, incredible battery life 5 years. Easy installation by the user. TTL and HSS on RetraFlash Fantastic TTL accuracy allows photographers to relax and rely completely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üt via the TTL converter's built-in rotary switch. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be set using the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch.

Optoelectronic TTL-Converter for OLYMPUS cameras for ISOTTA EM1-II and EM1-III underwater housings. New style Hot Shoe (5 pins) of m4/3 system. TTL system does not need batteries. Compatible underwater strobes: Inon S-220 / Z-330 / Z-240 / S-2000, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-160, Retra Pro (including HSS). Optional electric bulkhead is supported as well, pay attention that miniature onboard socket is 4-pin MicroMatch, it requires UWTechnis bulkhead usage or a plug adapter Isotta-to-UWT. TTL Converter is purposed for usage with ISOTTA original optical sockets factory preinstalled in the housing, no any additional optical bulkheads needed.

Optoelectronic TTL converter for Olympus for Nauticam underwater housings: NA-EM1 II, NA-EM5 II, NA-EM10 II, NA-EM10 III. The firmware includes the following underwater flash profiles: Inon Z-330 / Z-240 / D-2000, Sea&Sea YS-D2 (made in China)/ YS-D1 / YS-250, Ikelite DS-161 / DS-160, Subtronic Pro-270 / Pro-160, RetraFlash Pro (enables HSS). The combined unit contains optical TTL and electrical TTL modules on a single board. Synchronisation with underwater flash is possible via fibre optic cables or electrical cables, separately or simultaneously. The combined unit contains optical TTL and electrical TTL modules on a single board.

TTL converter (für SONY) for Marelux underwater housings: Compatible underwater flashes Inon Inon S-220 / Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-270 / Pro-160, Retra Pro. Convenient parking bracket for hot shoe plug. TTL and HSS on RetraFlash Fantastic TTL accuracy allows photographers to relax and rely entirely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üvia the TTL converter's built-in rotary switch. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be set using the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch. Full compatibility with all SONY mirrorless cameras, regardless of model and TTL protocol version.

Optoelectronic TTL Converter for CANON for ISOTTA housings of former years, including 2 pcs Optical Bulkheads with built-in LED Compatible underwater strobes: Inon S-220 / Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-270 / Pro-160, Retra Pro X (including HSS). Compatible Canon photo cameras : 7d, 7dMkII, 6dMkII, 80d, 750d, 5dMkII, 5dMkIII, 5dMkIV, 5dSR, 1dX, 1dXMkII, 1dXMkIII, R, R5, R7, R6II. Two optional ISOTTA electric bulkheads are supported as well, onboard sockets have ISOTTA style pinout. This TTL board is purposed for installation instead of Isotta special shape commutation board. Such type of Isotta housings has a special curved shape milled recess in metal, the same curved shape has the TTL-converter board. Check your housing regarding such installation version before TTL system purchasing.

Optoelectronic TTL converter for the modern generation of Sea&Sea cameras for Canon, including the latest R5, R7, R6II etc. All Canon cameras are compatible, regardless of model and TTL protocol version. Supported flash units: Inon S-220Z240, Z330, D2000; Ikelite DS161, DS160; Sea&Sea YS-250, YS-D1, YS-D3 Mark II; Subtronic Pro270, Pro160, RetraFlash. TTL board supports 2pcs optical bulks + 2pcs electric bulks can be connected. The standard kit contains optical LED emitters (2 pcs.). The electrical cable/connector (1 or 2 pcs.) for connection to the Nikonos-V bulkhead is an optional product that can be purchased separately (please specify when ordering).  TTL and HSS on the RetraFlash Fantastic TTL accuracy allows the photographer to relax and rely entirely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has several other important updates related to its common functionality. The Retra PRO profile can be set by the user üvia the TTL converter's built-in rotary switch. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be adjusted with the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user via an onboard switch.

Optoelectronic TTL Converter for NIKON for ISOTTA D500 and D850 housing, including Leak Detector electronics, Sirene, Leak Sensor, and 2 pcs LEDs (without Optical Bulkheads). Compatible underwater strobes: Inon S-220 / Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-270 / Pro-160, Retra Pro X (including HSS). Two optional ISOTTA electric bulkheads (must be purchased separately) are supported as well, onboard sockets have ISOTTA style pinout. This TTL board is purposed for installation instead of Isotta electronics, directly on the metall wall of the housing upper front part. Check your housing regarding such installation version before TTL system purchasing.  TTL and HSS on the RetraFlash The fantastic TTL accuracy allows the photographer to relax and rely entirely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üvia the TTL converter's built-in rotary switch. . The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be adjusted with the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch.

Optoelectronic TTL Converter for NIKON for ISOTTA D500 and D850 housing, including Leak Detector electronics, Sirene, Leak Sensor, and 2 pcs LEDs (without Optical Bulkheads). Compatible underwater strobes: Inon S-220 / Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-270 / Pro-160, Retra Pro X (including HSS). Two optional ISOTTA electric bulkheads (must be purchased separately) are supported as well, onboard sockets have ISOTTA style pinout. This TTL board is purposed for installation instead of Isotta electronics, directly on the metall wall of the housing upper front part. Check your housing regarding such installation version before TTL system purchasing.  TTL and HSS on the RetraFlash The fantastic TTL accuracy allows the photographer to relax and rely entirely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üvia the TTL converter's built-in rotary switch. . The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be adjusted with the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch.

Optoelectronic TTL converter for the modern generation of Sea&Sea housings for Nikon, including the latest D850, etc. All Nikon cameras are compatible, regardless of model and TTL protocol version. Supported flash units: Inon Z240, Z330; Ikelite DS161, DS160; Sea&Sea YS-250, YS-D1, YS-D2 (made in China), RetraFlash. TTL board supports 2 optical ports + 2 electrical jacks can be connected. The standard kit contains optical LED emitters with adapters made of transparent plastic (2 pcs.). The electrical cable/connector (1 or 2 pcs.) for connection to the Nikonos V-box is an optional product that must be purchased separately (please specify when ordering).  TTL and HSS on the RetraFlash The fantastic TTL accuracy allows the photographer to relax and rely entirely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üvia the TTL converter's built-in rotary switch.. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be adjusted with the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch.

Optoelectronic TTL-Converter for OLYMPUS for NAUTICAM NA-OM1, EM1 III, EM10 IV, EM1X, EM5 II, EM5 III underwater housings (22 mm between optical socket centers). New style Hot Shoe (5 pins+frame) of m4/3 system. TTL-Converter does not need a battery. Compatible housings: NA-OM1, EM1 III, NA-EM1 IV. NA-EM1X,NA-EM5 II, NA-EM5 III (22 mm version). Compatible underwater strobes: Inon Z-330 / Z-240 / S-2000, Sea&Sea YS-D1 / YS-D3 Mark II/ YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-160, Retra Pro X (including HSS).

Optoelectronic TTL-Converter for SONY A1-A9 cameras for ISOTTA underwater housings, including Leak Detector electronics, Sirene, Leak Sensor, and 2 pcs LEDs (without Optical Bulkheads). Compatible underwater strobes: Inon Z-330 / Z-240 / S-2000, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-270 / Pro-160, Retra Pro X (including HSS). Two optional ISOTTA electric bulkheads are supported as well, onboard sockets have ISOTTA style pinout. This TTL board is purposed for installation instead of Isotta electronics, directly on the metall wall of the housing upper front part, or on the plastic podium in the same place. Check your housing regarding such installation version before TTL system purchasing.

Optoelectronic TTL converter (for SONY) for NAUTICAM underwater housing NA-A6600. Compatible underwater flashes: Inon Z-330 / Z-240 / S-2000, Sea&Sea YS-D1 / YS-D2 (made in China) / YS-250, Ikelite DS160 /, DS160, Subtronic Pro-270 / Pro-160, RetraFlash PRO TTL and HSS on the RetraFlash Fantastic TTL accuracy allows photographers to relax and rely entirely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üvia the TTL converter's built-in rotary switch. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be set using the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch. Full compatibility with all SONY mirrorless cameras, regardless of model and TTL protocol version.

Optoelectronic TTL-Converter for SEAFROGS (MEIKON) Salted Line housings for Sony A6xxx line, including Optical LED module, Leak Detector onboard and Sensor Compatible underwater strobes: Inon Z-330 / Z-240 / S-2000, Sea&Sea YS-D1 / YS-D2 (China) / YS-250, Ikelite DS161 /, DS160, Subtronic Pro-270 / Pro-160, Retra Pro (including HSS). Leak Detector electronics, red Indicator, Sirene and gold plated leak Sensor are included.