Speedlite Transmitter ST-E3-RT (Ver. 2)

Using radio transmission to wirelessly trigger up to 15 Speedlites allows infinite amount of creativity for off-camera flash photography. Designed with a Dot-Matrix LCD display and wheel-type dial for intuitive user-interface.

The Speedlite Transmitter ST-E3-RT (Ver. 2)* is enhanced with these new features to maximise Speedlite EL-1's potential.

  • Achieve up to 1/8192 microflash wirelessly
  • Wirelessly trigger second-curtain sync flash
  • FE memory allows seamless transition between E-TTL and Manual mode

    *compatible only with Speedlite models with RT function.

Creativity Unbounded

Create dreamlike images with wireless Speedlite control

Adding finesse

Adding that finer touch to dimly lit scenes with 1/8192 microflash with Speedlite EL-1.

Experiment with motion

Pair wireless second-curtain flash sync on Speedlite E-1 with slow shutter speed and see the magic happen.

Showcase Delectable Shots

Light food up from different angles with wireless Speedlite control to make the food look its best. 

Freeze Water Splashes

Multiple wireless Speedlite setup for the optimum output for freezing those splashes. 

Wonders of Multiple Speedlites

Multiple Groups 
Control up to 15 compatible Speedlites with up to 5 groups for different settings.

*These flash mode settings indicated are only as example


Linked Shot

Capable of wirelessly triggering up to 16 compatible cameras simultaneously for multiple angles of the same subject at the exact same time.


*able to be used as a Transmitter/Receiver unit.

Existing ST-E3-RT users can enjoy the same enhancement available in ST-E3-RT (Ver. 2) with firmware update. Firmware updateis available at local Canon service centres from May 2021. Kindly contact your local Canon service centres for more details.