ST-E3-RT(Ver.2) Update


Get more from your Speedlite Transmitter ST-E3-RT

Canon Europe is offering an update to owners of the Speedlite Transmitter ST-E3-RT. This update to (Ver.2) is a chargeable service to add extra features for greater control of compatible Canon Speedlite flashes (with compatible cameras), including the flagship Speedlite EL-1.

Additional functions supported by ST-E3-RT(Ver.2) vs ST-E3-RT

FE memory

Using the Flash Exposure (FE) memory feature1, the Speedlite Transmitter ST-E3-RT(Ver.2) can store the last E-TTL flash shot settings, allowing the photographer to switch to Manual Flash mode, making minor adjustments around these settings as needed, for a quick, easy and consistent set up.


Micro flash

The Speedlite Transmitter ST-E3-RT(Ver.2) allows a new low-power option down to 1/8192 sec1, allowing photographers further control of the flash output across 14 steps of range. This is ideal when a subtle amount of light is needed to maintain the ambience in scene or portrait, while balancing the exposure with low ambient lighting.


Wireless second curtain sync

The Speedlite Transmitter ST-E3-RT(Ver.2) now supports wireless second curtain sync1 when fired remotely, which opens up a number of creative options for greater artistic expression, such as trailing light.



Nadogradnja Speedlite odašiljača ST-E3-RT na (ver. 2) je usluga koja se naplaćuje i može da se obavi samo u Canon profesionalnom servisnom centru.


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    1. Note, not all cameras and Speedlites are compatible with all updates, please check the Canon Speedlite Transmitter ST-E3-RT(Ver.2) product page for more details.