s-TURTLE SMART 3 – TTL & Manual Trigger for Sony Mirrorless Cameras

Reliable TTL and manual flash control via fiber optic or sync cord – now in the powerful SMART 3 version.

The s-TURTLE SMART 3 is our latest-generation TTL trigger designed for Sony’s high-end mirrorless cameras. This is more than a name update – it features all-new hardware, upgraded software, and expanded compatibility with today’s most advanced underwater strobes.

It is the perfect solution for professional underwater photographers who require accurate TTL exposure, smart operation, and broad compatibility with both cameras and strobes.

Our company was the first to offer a TTL trigger for Sony mirrorless cameras, and with the SMART 3 series, we've raised the standard once again with even more functions and support.

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 Compatible Sony Cameras (TTL / MANUAL mode):

A72, A7R2, A7S2, A73, A7R3, A7S3, A7R4, A74, A1, A9, A9II, A7C, A7CR, A7CII, 6X00 series
(HI+ burst mode tested and supported: A74, A1, A7R5, A9II)

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 Compatible TTL Strobes (as of 06/2025):

• Ikelite DS160, DS230

• Seaflash 60D, 160D

• Inon Z240 / Z330

• Sea&Sea YS-D1, YS-D2J, YS-D3, YS-D3 DUO

• Subtronic 270

• Retra PRO X, PRO MAX

• Backscatter Mini Flash 2 (MANUAL / HSS)

• AOI Intelli Strobe

• Backscatter HF-1

• APOLLO III V2.0, APOLLO S

HSS (High-Speed Sync) available in MANUAL (WL) mode with compatible strobes.

⚠️ We regularly add new supported strobes – before purchasing, please download the PC or Mac configuration software to check compatibility with your system.

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 Key Features – SMART 3 Version

• User-replaceable battery with 3× the capacity of previous SMART 1–2 models

• USB-C connector for charging and configuration

• Reinforced switches and robust connector for LED or sync cord output

• "SMART" button to check battery status:

  • 4 flashes = 100%

  • 3 flashes = 75%

  • 2 flashes = 50%

  • 1 flash = 25%

• TTL & Manual (WL) mode switching via the camera menu – even underwater

• No-preflash WL mode for clean manual control:

  • First curtain

  • Second curtain

  • Strobe/multiflash mode

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Package Includes:

• 1× s-TURTLE SMART 3 TTL Trigger for Sony with accu

• 1× plus accumulator

• 1× LED panel (or optional sync cord output)

• 1× USB-C charging and configuration cable
   

For fiber optic use, we recommend multicore (613) cables.
At checkout, please let us know which strobe model and connection type (fiber or sync cord) you will use – so we can pre-configure the trigger for optimal performance.

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Manual Download

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Tutorial videos

• How to change the accu within a minute
  https://www.youtube.com/watch?v=x1hy1vVInBw

• How to setup the trigger in windows
  https://www.youtube.com/watch?v=8gUj3aq7KV4