Yongnuo YN-E3-RT Speedlite transmitter

Yongnuo YN-E3-RT Speedlite Transmitter is directly compatible with the Canon 600EX-RT flash, Canon 430EX III-RT, and a Yongnuo YN600 unit with  It supports all the features of the Canon ST-E3-RT, as well as few extra features.

The YN-E3-RT Wireless Speedlite Transmitter for Canon from Yongnuo is a 16 channel, 5 group wireless triggering device with a 100m range. The transmitter offers E-TTL II/E-TTL autoflash, manual flash, stroboscopic flash, auto external flash metering modes as well as 1:8 flash ratio control

Convenience features include flash exposure lock, AF beam focus assist, modeling strobe and 9 custom functions. The YN-E3-RT transmitter will run for 10 hours of continuous use on AA/LR6 alkaline batteries. A power saving function shuts the unit down after being idle for 5 minutes to conserve batteries.

The Yongnuo Speedlite Transmitter YN-E3-RT is a transmitter for wireless flash shooting. It can control up to 5 groups (15 units) of speedlites that have a wireless multiple flash shooting function using radio transmission. The transmitter also has dust and water resistance equivalent to EOS-1D series cameras

It includes all the features of the Canon ST-E3-RT, as well as few more important features:

• AF Focus Assist light.
• USB port for firmware updates
• Second curtain sync (in manual only)
• Full GR Group Mode functionality has also now been added for pre 2012 model cameras
• Slave flash charge status does not stop other flashes from firing