Yongnuo YN-E3-RT Review

Yongnuo Speedlite Transmitter YN-E3-RT Review

There is a newer version of this item, the YN-E3-RT II Transmitter

Yongnuo YN-E3-RT speedlite transmitter top view showing LCD display and controls


Introduced March 2015.

The Yongnuo YN-E3-RT is a compact radio transmitter which sits on the camera’s hotshoe and can control speedlites such as the Yongnuo YN600EX-RT II or the Yongnuo YN968EX-RT. The YN-E3-RT uses the Canon RT radio system and is therefore compatible with the newer range of Canon’s radio-enabled speedlites such as the Canon 600EX II-RT, 600EX-RT and the 430EX iii-RT.

Using a dedicated radio transmitter on your camera has the advantage of being much smaller and lighter than using a master speedlite to control slave flashes and it’s also cheaper. The YN-E3-RT has a range of up to 100m, supports E-TTL II and high speed sync. It can control up to 5 groups and up to 15 speedlites and has an infra-red autofocus assist lamp.

As many people will realise, the Yongnuo YN-E3-RT is almost an exact copy of the Canon ST-E3-RT transmitter.

Guide Price £68 / US$102

Wex (UK) / Amazon (UK) / B&H Photo (US) / Adorama (US) / Amazon (US)


The Yongnuo Speedlite Transmitter is compatible with the Yongnuo Speedlite 600EX-RT II, the Canon Speedlite 600EX ii-RT, the older Canon Speedlite 600EX -RT and the Canon 470EX iii-RT (basically any Canon Speedlite with an “RT” in the name)

Flash Head Tilt & Swivel

Fixed head

Manual Exposure

Manual / output settings: Yes – 1/1- 1/128
Manual steps: 1/3 stop increments

YN-E3-RT shown fixed to the top of a camera

ETTL Exposure

Canon ETTL with flash exposure compensation (FEC), flash exposure lock (FE lock) and flash exposure bracketing (FEB) 

Wireless Communication

Radio Wireless (RF) 2.4GHz
Uses the Canon RT 2.4GHz radio system
Transmitter maximum range approximately: up to 100m
No. of groups: 5 (A, B, C, D & E) up to 15 units
No. of channels: Auto, 15 channels and 10,000 wireless IDs
Master/Slave: Master unit

Optical Wireless
No, this is a radio transmitter only. 

Auto-Focus (AF) Assist 

AF-assist beam: Yes
Number of AF points supported: 1
AF-assist beam type: Infra-red
Beam range: 0.6-10m at centre, 0.6 to 5m at periphery

YN-E3-RT mounted to camera hotshoe from view showing the infra-red focus assist window

Other Features

High speed sync (HSS): Yes
Second-curtain flash sync: Yes
Modelling flash: Yes (fired with camera’s depth-of-field preview button)
Colour temperature info communication: Yes
Remote shutter release: Yes
Custom function: 8 (3 personal functions) 
Flash settings from camera menus (with compatible cameras only): Yes
External flash exposure sensor (S1, S2): No
PC terminal: No

Batteries & Recycling Time

Battery: 2 x AA batteries (alkaline or rechargeable Ni-MH. Lithium also usable)

Build Quality

Dust and water resistance: Yes
Mounting foot material: Metal
Size: 67.4 x 61.5 x 77.4mm (2.7 x 2.4 x 3.0″)
Weight: 110g/3.9oz (excluding batteries)

Compatible accessories: 


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