Canon ST-E3-RT is a compact radio transmitter that can fire up to 15 compatible Speedlite flashguns in three groups over distances of up to an impressive 30m.

Fire compatible Speedlite flashguns over distances of up to 30m. Canon Speedlite Transmitter ST-E3-RT V2 provides reliable operation even when a direct line of sight is not possible.

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such as the ST-E3-RT, or with an EOS...

a Speedlite transmitter ST-E3-RT radio trigger or...

Discover Canon EOS 6D Mark II compatible lenses and accessories! Visit our website to browse our lenses and camera accessories.

Connect your Canon EOS 5D Mark IV to the wider world of imaging thanks to Canon lenses and accessories.

Do you own a Speedlite EL-1 or ST-E3-RT? Discover our upgrade service and expand your creativity with a new wireless transmitter. Find out more.

This Infobank article examines the Speedlite flash system and wireless control and explains how it works with Canon EOS cameras. Find out more.

Introduction to black and white photography. Quick tips for better black and white photos.