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Mifsuds Photographic Ltd / Canon ST-E3-RT Speedlite Transmitter
st-e3 rt st-e3 rt 1 st-e3 rt 2
st-e3 rt

Canon ST-E3-RT Speedlite Transmitter



A radio-frequency flash trigger aimed at professional photographers using off-camera flash.

Out of Stock

SKU: 5743B003AA Categories: , Tags: , ,


A radio-frequency flash trigger aimed at professional photographers using off-camera flash.


Fire compatible Speedlite flashguns over distances of up to 30m. Radio-frequency control provides reliable operation even when direct line of sight is not possible.



Key Features:

  • Newly-designed wireless system uses 2-way radio wave communication for enhanced communication among master and slave units. Achieves a transmission distance of up to 98.4′ (30 m), all at a 360 degree angle.
  • Up to 5 groups, or 15 individual flashes can be controlled via 1 transmitter.
  • Supports E-TTL II flash, manual flash, stroboscopic and auto external flash metering.
  • Dot matrix LCD panel displays all pertinent information simultaneously and backlit control panel means easy operation.
  • 8 types of custom functions, 3 types of personal functions.
  • Improved hot shoe contacts for more reliable information transmission and operation.
  • Slave operation confirmation:
    Green Light–Lit: Radio Transmissions Okay
    Red Light–Lit: Not Connected
    Blinking: Transmission Error/ Too many units
    Orange Light–Lit: Sub-master transmission
    Blinking: Receiving remote release shooting, linked shooting signal
  • Not compatible with earlier Speedlite models such as 580EX II




  • EOS 40D*
  • EOS 5DS
  • EOS M50*
  • EOS N
  • EOS 350D*
  • EOS 5D*
  • EOS 760D*
  • EOS M6*
  • EOS-1D Mark III*
  • EOS 1200D*
  • EOS 300D*
  • EOS 5D Mark II*
  • EOS 5D Mark III
  • EOS 600D*
  • EOS 77D
  • EOS 7D*
  • EOS 7D II
  • EOS 80D
  • EOS D30*
  • EOS M5*
  • EOS-1D Mark II*
  • EOS-1Ds Mark II*
  • EOS 100D*
  • EOS 1100D*
  • EOS 200D
  • EOS 450D*
  • EOS 60D*
  • EOS 700D*
  • EOS 750D*
  • EOS-1D C
  • EOS-1D Mark IV*
  • EOS 10D*
  • EOS 30D*
  • EOS 500D*
  • EOS-1D X
  • EOS-1D X Mark II
  • EOS-1Ds Mark III*
  • EOS 20D*
  • EOS 400D*
  • EOS 50D*
  • EOS 550D
  • EOS 5DS R
  • EOS M2*
  • EOS M3*
  • EOS R
  • EOS 1300D*
  • EOS 4000D*
  • EOS 60Da*
  • EOS 6D*
  • EOS 6D Mark II
  • EOS M*
  • EOS 2000D*
  • EOS 5D Mark IV
  • EOS 650D
  • EOS 70D
  • EOS 800D*
  • EOS D60*
  • EOS M10*
  • PowerShot G5 X
  • PowerShot G3 X
  • PowerShot G1 X Mark III
  • EOS RP
  • EOS 90D
  • EOS M6 Mark II
  • EOS Ra
  • EOS-1D X Mark III
  • EOS 850D


* Not fully compatible with all functions using Radio Transmission



What’s in the box:

  • Canon ST-E3-RT Speedlite Transmitter
  • Soft case



Kyosei is Canon’s corporate philosophy and lies at the heart of our brand, business and sponsorship activities. Kyosei is a Japanese word that means living and working together for the common good – a principle that is embraced by all Canon employees. It shapes our mission and our values, the way we treat our people and conduct our business. Beyond our company activities, Kyosei influences the way we operate within the wider community and with organisations throughout the world. We believe that being a good corporate citizen is of paramount importance and are mindful of how our activities impact on our customers, employees, partners and the world around us.

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