Reliable off-camera flash control

Control compatible Canon Speedlite flashguns over distances up to 30m. 2.4GHz radio frequency triggering operates reliably, even when shooting outdoors and around corners – a direct line of sight not required.

Multiple flash photography

Create intricate multi-flash lighting setups, triggering up to 15 Speedlite flashes with a single camera-mounted Speedlite Transmitter ST-E3-RT(Ver.2). E-TTL II flash metering makes exposure control easy.

Remote camera control

Trigger an EOS camera fitted with a Speedlite Transmitter ST-E3-RT(Ver.2) from a second unit or from a compatible Speedlite flashgun, such as the Speedlite 600EX II-RT. Up to 15 cameras can be triggered at once, for synchronised shooting.

Easy to use design

The Speedlite Transmitter ST-E3-RT(Ver.2) is sealed against dust and moisture to the same degree as professional EOS cameras and L-series lenses. It features an easy to read back-lit LCD control screen and is powered by two AA/LR6 batteries.

Wireless second curtain sync

Speedlite Transmitter ST-E3-RT(Ver.2) supports wireless second curtain sync for the EL-1 when fired remotely, plus 1/8192 nuanced lighting and flash exposure (FE) memory.

Specifications

• Radio frequency remote flash trigger

• Fire selected Speedlites from 30m away

• Part of the E-TTL II flash system

• Controls up to 15 flashguns

• Remote camera triggering

• Weather sealed against dust and moisture

• Second curtain sync, 1/8192 power and FE memory for EL-1 and later Speedlites