The i-TURTLE SMART 3 TTL Trigger for Nikon cameras is a next-generation underwater flash control system designed for professional underwater photographers who require dependable TTL exposure, advanced flash control, and broad strobe compatibility.
Supporting both Nikon DSLR and mirrorless camera systems, the SMART 3 delivers accurate TTL, Manual, and High-Speed Sync (HSS) flash triggering through either fiber optic or sync cord connections. Built on the latest SMART 3 platform, this upgraded trigger features completely redesigned hardware, enhanced software architecture, improved power management, and expanded compatibility with many of today's most popular underwater strobes.
More than a simple update, SMART 3 introduces a user-replaceable high-capacity battery, USB-C charging and configuration, reinforced connectors, and intelligent camera-menu-based flash control that can be adjusted even while underwater.
Designed to integrate seamlessly into professional underwater housings, the i-TURTLE SMART 3 provides a reliable and flexible flash triggering solution for demanding underwater imaging applications.
Key Features
- Advanced TTL and Manual flash control for Nikon DSLR and mirrorless cameras
- High-Speed Sync (HSS) support through compatible camera systems
- Compatible with fiber optic and sync cord triggering systems
- Next-generation SMART 3 hardware and software platform
- User-replaceable high-capacity rechargeable battery with up to 3× the capacity of previous SMART 1 and SMART 2 versions
- USB-C charging and configuration interface
- Reinforced switches and ruggedized connector system
- Intelligent battery status indicator via SMART button
- Camera-menu-based TTL and Manual mode switching, including underwater operation
- First Curtain and Second Curtain flash synchronization support
- Software-configurable strobe compatibility profiles
- Optimized for professional underwater photography and video workflows
Specifications
- Product Type: Underwater TTL / Manual / HSS Flash Trigger
- System Compatibility: Nikon DSLR Cameras, Nikon Mirrorless (MILC) Cameras
- Flash Modes
- TTL
- Manual
- HSS (High-Speed Sync)*
- Synchronization Modes
- First Curtain Sync
- Second Curtain Sync
- Trigger Methods
- Fiber Optic LED Triggering
- Electrical Sync Cord Triggering
- Power System
- Rechargeable SMART 3 Battery System
- User-replaceable battery design
- Up to 3× higher capacity than previous SMART models
- Charging Interface
- Configuration
- PC and Mac software configuration utility
- Battery Status Indicator
- 4 flashes = 100%
- 3 flashes = 75%
- 2 flashes = 50%
- 1 flash = 25%
- Construction
- Reinforced control switches
- Enhanced output connector design
- Built for underwater housing integration
- Camera Compatibility
- Nikon Mirrorless Cameras
- Nikon Z30
- Nikon Z50
- Nikon Z6
- Nikon Z6 II
- Nikon Z7
- Nikon Z7 II
- Nikon Z8
- Nikon Z9
- Nikon DSLR Cameras
- Nikon D90
- Nikon D300
- Nikon D300s
- Nikon D7000
- Nikon D7100
- Nikon D7200
- Nikon D7500
- Nikon D500
- Nikon D600
- Nikon D750
- Nikon D800
- Nikon D810
- Nikon D810A
- Nikon D850
- Nikon D4
- Nikon D4s
- Nikon D5
- Strobe Compatibility (TTL / Manual / HSS Depending on Setup)
- Ikelite
- SeaFlash
- Inon
- Sea & Sea
- Retra
- PRO X MILC
- PRO MAX DSLR/MILC
- AOI
- Intelli Strobe (Sony configuration mode)
- Backscatter
- HF-1 (Sony configuration mode)
- Marelux
- Additional strobe profiles are regularly added through SMART 3 software updates.
- Trigger Connection Compatibility
- Fiber optic LED triggering systems
- Electrical sync cord underwater strobes
- Multi-brand TTL and manual strobe systems via configuration profiles
In the Box
- 1× i-TURTLE SMART 3 TTL Trigger for Nikon Cameras
- 2× SMART 3 rechargeable batteries (one installed, one spare)
- 1× LED fiber optic output module or optional sync cord interface
- 1× USB-C charging and configuration cable
- 1× User manual / setup guide
