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Underwater TTL Reference Guide

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Underwater TTL Reference Guide


TTL is an automatic strobe exposure system and a great tool for underwater photographers. TTL systems allow you to focus on strobe placement while it figures out the best strobe exposure. It's not fail proof, but modern systems have become surprisingly accurate and help make underwater photography even more fun.

We've assembled this reference guide to help you identify the various TTL options for your brand of housing and camera. This guide is not an attempt to demystify the subtle complexities of TTL systems, but something we like to use when discussing TTL options with our customers.

Select your housing brand from the index below and give us a call. We look forward to help you select the best option for your favorite types of underwater subjects.

SELECT YOUR HOUSING BRAND

  1. Aquatica TTL Options
  2. Ikelite TTL Options
  3. Nauticam TTL Options
  4. Sea & Sea TTL Options
  5. Subal TTL Options






AQUATICA TTL OPTIONS

UW Technics TTL Converter for Nikon
(Electronic & Fiber Optic)

The UW Technics TTL converter supports both optical and electrical strobe triggering and is compatible with popular strobes from Inon and Sea & Sea. Optical triggering eliminates o-ring maintenance and potential water intrusion over electrical sync cables. Full automatic TTL and manual are supported. The UW Technics converter also supports Rear Curtain Sync.
Internal Ikelite TTL Circuitry for Canon
(Electronic)

Aquatica and Ikelite have teamed up to offer Ikelite's Internal TTL system on select Aquatica housings such as the Canon 5DS R and 7D MkII housings. This TTL system is only compatible with Ikelite strobes. A command dial on the exterior of the housing allows for quick access to either TTL Exposure compensation or manual strobe output.
External Ikelite TTL Converter for Nikon
(Electronic)

The Ikelite External TTL Converter will allow Ikelite DS strobes to be connected to nearly any housing for Nikon with a Nikonos 5 pin or Ikelite 5 pin electrical bulkhead strobe connector and 5 pin hot shoe. The TTL Converter is equipped with a simple rotating switch that allows toggling between TTL and manual exposure.
Pop-Up Flash
(Fiber Optic)

Many cameras include a built in, pop-up flash. This flash can be used to optically trigger strobes. Sea & Sea and Inon are both TTL compatible when shooting with the camera's internal flash. Using a camera's pop-up flash is the most affordable TTL option, but also the slowest method of shooting TTL. The primary limitations to using a camera's pop-up flash are the long recycle times of the camera's internal flash and consumption of the camera's battery.




Aquatica Compatibility Grid


UW Technics
Converter
(Electronic & Fiber Optic)

Internal Ikelite
Circuitry
(Electronic)

External Ikelite
Converter
(Electronic)

Pop-Up
Flash
(Fiber Optic)
Nikon D5 YES - - -
Nikon D810 - - YES YES
Nikon D500 YES - - -
Nikon D7200 - - YES YES
Canon 5D III,
5DS, 5DS R
- YES - -
Canon 7D II - YES - YES
Canon 70D - - - YES
Sony a7 II,
a7R II, a7S II
- - - -







IKELITE TTL OPTIONS

Ikelite Housing Built In TTL Converter
(Electronic)

An integrated TTL circuit is fine-tuned to the flash exposure protocol for the most accurate exposure possible with Ikelite Ds strobes. The circuit is powered by the strobe for zero maintenance and no batteries to change. Exposure compensation in TTL mode is supported using the camera's built-in control.
Pop-Up Flash
(Fiber Optic)

Many cameras include a built in, pop-up flash. This flash can be used to optically trigger strobes. Sea & Sea and Inon are both TTL compatible when shooting with the camera's internal flash. Using a camera's pop-up flash is the most affordable TTL option, but also the slowest method of shooting TTL. The primary limitations to using a camera's pop-up flash are the long recycle times of the camera's internal flash and consumption of the camera's battery.




Ikelite Compatibility Grid


Ikelite Built-In
Converter
(Electronic)

Pop-Up
Flash
(Fiber Optic)
Nikon D810 YES -
Nikon D7200 YES -
Canon 5D III,
5DS, 5DS R
YES -
Canon 7D II YES -
Canon 70D YES -
Sony a7 II,
a7R II, a7S II
YES -
Sony a6300 YES YES







NAUTICAM TTL OPTIONS

UW Technics TTL Converter for Nikon
(Electronic & Fiber Optic)

The UW Technics TTL converter supports both optical and electrical strobe triggering and is compatible with popular strobes from Inon and Sea & Sea. Optical triggering eliminates o-ring maintenance and potential water intrusion over electrical sync cables. Full automatic TTL and manual are supported. The UW Technics converter also supports Rear Curtain Sync.
Nauticam TTL Converter for Nikon
(Electronic & Fiber Optic)

The Nauticam TTL Converter supports both optical and electrical strobe triggering and is compatible with popular strobes from Inon and Sea & Sea. With these converters, optical strobe triggering is the way to go. Optical triggering eliminates o-ring maintenance and potential water intrusion over electrical sync cables. Full automatic TTL and manual are supported. The Nauticam TTL Converter also supports Rear Curtain Sync.
Nauticam Optical TTL Converter for Canon
(Fiber Optic)

This hotshoe mounted optical flash trigger provides automatic TTL Flash when used with Inon S-TTL and Sea & Sea DS-TTL Strobes connected by fiber optic cables. The TTL trigger also offers manual triggering. The Nauticam TTL Converter also supports Rear Curtain Sync.
External Ikelite TTL Converter for Nikon
(Electronic)

The Ikelite External TTL Converter will allow Ikelite DS strobes to be connected to nearly any housing for Nikon with a Nikonos 5 pin or Ikelite 5 pin electrical bulkhead strobe connector and 5 pin hot shoe. The TTL Converter is equipped with a simple rotating switch that allows toggling between TTL and manual exposure.
Pop-Up Flash
(Fiber Optic)

Many cameras include a built in, pop-up flash. This flash can be used to optically trigger strobes. Sea & Sea and Inon are both TTL compatible when shooting with the camera's internal flash. Using a camera's pop-up flash is the most affordable TTL option, but also the slowest method of shooting TTL. The primary limitations to using a camera's pop-up flash are the long recycle times of the camera's internal flash and consumption of the camera's battery.




Nauticam Compatibility Grid


UW Technics
(Electronic &
Fiber Optic)

Nauticam
Converter
(Electronic &
Fiber Optic)

Nauticam
Flash Trigger
(Fiber Optic)

External Ikelite
Converter
(Electronic)

Pop-Up
Flash
(Fiber Optic)
Nikon D5 - YES - - -
Nikon D810 YES - - YES YES
Nikon D500 - YES - - -
Nikon D7200 YES - - YES YES
Canon 1DX II - - YES - -
Canon 5D III,
5DS, 5DS R
- - YES - -
Canon 7D II - - YES - YES
Canon 70D - - YES - YES
Sony a7 II,
a7R II, a7S II
- - - - -
Sony a6300 - - - - YES







SEA & SEA TTL OPTIONS

Sea & Sea Optical YS Converter for Nikon & Canon
(Fiber Optic)

The Sea & Sea optical YS converter uses LEDs to trigger external TTL strobes electronically. The converter mounts inside select Sea & Sea housings. TTL and manual modes can be switched by pushing the mode switch on the housing.
External Ikelite TTL Converter for Nikon
(Electronic)

The Ikelite External TTL Converter will allow Ikelite DS strobes to be connected to nearly any housing for Nikon with a Nikonos 5 pin or Ikelite 5 pin electrical bulkhead strobe connector and 5 pin hot shoe. The TTL Converter is equipped with a simple rotating switch that allows toggling between TTL and manual exposure.
Pop-Up Flash
(Fiber Optic)

Many cameras include a built in, pop-up flash. This flash can be used to optically trigger strobes. Sea & Sea and Inon are both TTL compatible when shooting with the camera's internal flash. Using a camera's pop-up flash is the most affordable TTL option, but also the slowest method of shooting TTL. The primary limitations to using a camera's pop-up flash are the long recycle times of the camera's internal flash and consumption of the camera's battery.




Sea & Sea Compatibility Grid


Sea & Sea Optical
YS Converter
(Fiber Optic)

External Ikelite
Converter
(Electronic)

Pop-Up
Flash
(Fiber Optic)
Nikon D810 YES YES YES
Nikon D7200 YES YES YES
Canon 5D III,
5DS, 5DS R
YES - YES
Canon 7D II YES - YES
Canon 70D YES - YES
Sony a7 II,
a7R II, a7S II
YES - -







SUBAL TTL OPTIONS

Subal V1 TTL System for Nikon
(Electronic & Fiber Optic)

About 60% of all Subal older models housings for Nikon can be upgraded with this TTL system. It fits in place of the original Subal electronics for strobes and installation is very simple. Subal TTL V1 system uses two CD2032 batteries. Subal TTL V1 system can be equipped with electrical or optical cables. It is suitable for set of strobes such as the Sea & Sea YS-D1, Sea & Sea YS-01, Inon Z-240, Inon D-2000 and Inon S-2000.
Subal TTL Converter for Nikon & Canon
(Electronic & Fiber Optic)

The Subal TTL Converter mounts on top the camera and is able to work with both Nikon and Canon cameras. Strobes can be connected via fiber optic cable as well as with standard 5 or 6 pin connector cables. It is suitable for Sea & Sea, Inon, and Ikelite DS strobes. The Subal TTL adaptor can be used in many underwater housings currently on the market.
External Ikelite TTL Converter for Nikon
(Electronic)

The Ikelite External TTL Converter will allow Ikelite DS strobes to be connected to nearly any housing for Nikon with a Nikonos 5 pin or Ikelite 5 pin electrical bulkhead strobe connector and 5 pin hot shoe. The TTL Converter is equipped with a simple rotating switch that allows toggling between TTL and manual exposure.
Pop-Up Flash
(Fiber Optic)

Many cameras include a built in, pop-up flash. This flash can be used to optically trigger strobes. Sea & Sea and Inon are both TTL compatible when shooting with the camera's internal flash. Using a camera's pop-up flash is the most affordable TTL option, but also the slowest method of shooting TTL. The primary limitations to using a camera's pop-up flash are the long recycle times of the camera's internal flash and consumption of the camera's battery.




Subal Compatibility Grid


Subal V1
System
(Electronic &
Fiber Optic)

Subal Converter
(Electronic &
Fiber Optic)

External Ikelite
(Electronic)

Pop-Up
Flash
(Fiber Optic)
Nikon D5 YES YES - -
Nikon D810 YES YES YES YES
Nikon D500 YES YES - -
Nikon D7200 YES YES YES YES
Canon 1DX II - YES - -
Canon 5D III,
5DS, 5DS R
- YES - -
Canon 7D II - YES - YES
Sony a7 II,
a7R II, a7S II
- - - -







CAMERAS MENTIONED IN ARTICLE

Nikon D5 Nikon D810 Nikon D500 Nikon D7200
Canon 1DX II Canon 5DS R Canon 5DS Canon 5D III Canon 7D II Canon 70D
Sony a7 II Sony a7R II Sony a7S II Sony a6300


HOUSINGS MENTIONED IN ARTICLE

AQUATICA

Aquatica AD5 Underwater Housing Aquatica AD810 Underwater Housing Aquatica AD500 Underwater Housing Aquatica AD7100 Underwater Housing
Aquatica A5Dsr Underwater Housing Aquatica A7DMKII Underwater Housing Aquatica A7DMKII TTL Underwater Housing Aquatica A70D Underwater Housing Aquatica A7r II Underwater Housing


IKELITE

Ikelite D810 Underwater Housing Ikelite D7200 Underwater Housing Ikelite 7D II Underwater Housing
Ikelite 70D Underwater Housing Ikelite a7II Underwater Housing Ikelite a6300 Underwater Housing


NAUTICAM

Nauticam NA-D5 Underwater Housing Nauticam NA-D810 Underwater Housing Nauticam NA-D500 Underwater Housing Nauticam NA-D7200 Underwater Housing
Nauticam NA-1DXII Underwater Housing Nauticam NA-5DSR Underwater Housing Nauticam NA-7DMKII Underwater Housing Nauticam NA- 70D Underwater Housing
Nauticam NA- A7II Underwater Housing Nauticam NA-A6300 Underwater Housing


SEA & SEA

Sea & Sea MDX-D810 Underwater Housing Sea & Sea MDX-D7100 Underwater Housing Sea & Sea MDX- 5DMKIII Version 2 Underwater Housing
Sea & Sea MDX-7DMKII Underwater Housing Sea & Sea MDX-70D Underwater Housing Sea & Sea MDX- a7II Underwater Housing


SUBAL

Subal ND5 Underwater Housing Subal ND810 Underwater Housing Subal ND500 Underwater Housing Subal ND7100 Underwater Housing
Subal CD1DX2 Underwater Housing Subal CD5M 3 Underwater Housing Subal CD7M2 Underwater Housing Subal Alpha 7 II Underwater Housing









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