Canon
Canon Speedlite ST-E3-RT III Wireless Flash Transmitter
The Canon Speedlite ST-E3-RT III lets you remotely control up to 15 compatible Speedlite flashes within a 30-meter range. This reliable radio frequency trigger enables complex multi-flash setups, remote shutter release, and weather-resistant performance for professional photography.
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Updated on May 18, 2026
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