Yongnuo YN-E3-RT Speedlite Transmitter is directly compatible with the Canon 600EX-RT flash, Canon 430EX III-RT, and a Yongnuo YN600EX-RT flash unit with built in wireless receiver. 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
YONGNUO YN-E3-RT FEATURES
Two-way 2.4G radio communication, fully compatible with Canon ST-E3-RT/600EX-RT
Controls up to 5 groups (15 units) of Speedlites
15 Physical Channels, 1 Auto Channel, Up to 10,000 customizable photographers ID
Transmission Range: 100M
Multi YN-E3-RT can share slave flashes.
Display group/charge status of slave flashes
Firmware can be upgraded via USB
High resolution Dot-Matrix LCD, Backlight for LCD/keys
Fast lock mechanism
Built-in AF assist lamp, buzzer
Remote shutter release, Linked Shot
Flash Modes: ETTL/M/Multi/GR 4 flash modes
A/B/C/D/E 5 groups
Supports 1st Curtain, 2nd Curtain (Only in M mode), High speed Sync
Supports ETTL Ratios, Flash Exposure Compensation, Flash Exposure Lock, Flash Exposure Bracketing, Modeling Flash
9 Custom Functions
Settings saved automatically
Dust and water resistance equivalent to EOS-1D series cameras