Product Description
Speedlite Transmitter ST-E3-RT (Ver.3)
Remote Flash Trigger for Speedlite Flashes
Creative lighting and advanced remote flash photography are made simple with the Canon Speedlite Transmitter ST-E3-RT (Ver.3). Fire multiple flashes at once, adjust settings from a distance, and even trigger multiple cameras for perfectly synchronised shooting*. With a dependable 2.4GHz radio system, the ST-E3-RT (Ver.3) delivers reliable communication up to 30 metres away—no direct line of sight required.
Reliable Off-Camera Flash Control
Enjoy precise off-camera flash control over distances up to 30m. The 2.4GHz radio frequency triggering system ensures dependable operation even outdoors, around obstacles, or when the transmitter and flash units are not directly visible to one another.
Multiple Flash Photography
Design intricate lighting setups with ease. The ST-E3-RT (Ver.3) can trigger up to 15 compatible Speedlite flashguns, giving you the freedom to build multi-light configurations for portrait, product, and creative studio work. Canon’s E-TTL II metering ensures accurate, consistent flash exposure every time.
Remote Camera Control
Trigger an EOS camera* equipped with an ST-E3-RT (Ver.3) from a second transmitter or from a compatible Speedlite such as the Speedlite 600EX II-RT. Control up to 15 cameras simultaneously for synchronised capture—ideal for multi-angle shooting, time-critical action, or special effects photography.
Easy-to-Use, Professional Design
Built to match the durability of professional EOS bodies and L-series lenses, the ST-E3-RT (Ver.3) is sealed against dust and moisture for dependable performance in challenging conditions. It features a clear back-lit LCD screen for quick adjustments, and runs on two AA/LR6 batteries for convenience in the field.
Advanced Wireless Features
The ST-E3-RT (Ver.3) supports wireless second curtain sync**, delivering natural motion trails when used with the Speedlite EL-1 or Speedlite EL-5. You also gain access to ultra-fine 1/8192 power nuance control and flash exposure (FE) memory for more precise and repeatable creative lighting.
Top Features
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Radio frequency remote flash trigger
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Fire selected Speedlites from up to 30m away
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Part of the Canon E-TTL II flash system
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Controls up to 15 flashguns
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Remote camera triggering
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Weather-sealed against dust and moisture
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Second curtain sync**, 1/8192 power, and FE memory for EL-1 and EL-5*
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