e-TURTLE 3 SMART TTL trigger for Canon MILC systems

The e-TURTLE SMART 3 is the latest-generation TTL trigger designed for Canon 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. iTurtle was the first to offer Canon TTL triggers , and with the SMART 3 series, they have raised the standard once again with even more functions and support.

iTurtle was the first to develop the stroboscope function, which allows multiple flashes within a single exposure. They are also the first to drive AOI and Backscatter strobes using the i-TURTLE SMART TTL trigger.

Tested Canon cameras; (TTL / MANUAL mode): R3, R5, R5 mkII, R6, R6 mk2, R6mk3, M6 

 Compatible TTL Strobes (as of 12/2025):

    Inon Z and S series

    Sea&Sea YS-D3, YS-D3 DUO

    Retra PRO X, PRO MAX

    AOI Intelli Strobe  (SONY settings)  

    Backscatter HF-1 (SONY settings)

    APOLLO III V2.0,

    APOLLO S

    HSS (High-Speed Sync) available with compatible strobes.

    All settings (1St curtain / 2nd curtain , Manual, TTL or HSS settings stored in the trigger.  After sleep mode does not have to set it again all parameters! 

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 & HSS MANUAL mode switching via the camera menu – even underwater
-    All external flash fuction is available (Custom function does not work!)

    Strobe/multiflash mode   ( You can make 1-10 pcs flashing in one expo between 1/10 and 2 sec front curtain) 

Package Includes:

• 1× e-TURTLE SMART 3 TTL Trigger for Canon MILC 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.