Canon Speedlite ST-E3 RT Radio Transmitter

Makes complex lighting setups simple

Canon Speedlite ST-E3 RT Radio Transmitter

Canon Speedlite ST-E3 RT Radio Transmitter

Makes complex lighting setups simple

SKU: 5743B003

Cat no: 18326

  • Radio frequency remote flash trigger
  • Fire selected Speedlites from 30m away
  • Part of the E-TTL II flash system
  • Controls up to 15 flashguns

Estimated Delivery 3 to 5 days

£199.00 (ex vat) £238.80 (incl vat)

Canon Speedlite ST-E3 RT Radio Transmitter

Fire compatible Speedlite flashguns over distances of up to 30m. Radio-frequency control provides reliable operation even when direct line of sight is not possible.

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 – direct line of sight not required.

Multiple flash photography
Create intricate multi-flash lighting set ups, triggering up to 15 Speedlite flashes with a single camera-mounted Speedlite Transmitter ST-E3-RT. E-TTL II flash metering makes exposure control easy.

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

Easy to use design
The Speedlite Transmitter ST-E3-RT 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.

Key Features

  • 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.

Product Specification

Flash Modes
Auto exposure control E-TTLII/E-TTL/TTL
High speed sync (FP) Yes
Manual / output settings Yes - 1/1-1/128
Manual steps 1/3 step
Strobe / output settings Yes - 1/4-1/128
Frequency -500Hz

Flash-Related Function
FE lock Yes
Flash exposure compensation Yes
Flash exposure bracketing Yes
Second-curtain flash sync No
Modelling flash Yes
Colour temperature info communication No

Wireless Flash
Transmitter Yes
Transmission type Radio
Transmitter Max range approx. Indoors: 30m
Outdoors: 30m
Slave No
No. of groups 5
No. of channels 15
Remote Shutter Release Yes

AF Assist
AF-assist beam No

Power Source
Battery 2 x AA batteries
External power supply No

Dust and water resistance Yes
Mounting foot material Metal

Custom function 8 (3 personal functions)
PC terminal No
Compatible accessories SPEEDLITE 600EX-RT
Dedicated flash bracket No

Dimensions & Weight
Size (W x H x D), mm 67.4 x 61.5 x 77.4¹
Weight (Excluding batteries), grams 110g

* Time taken to recharge flash after full discharge using Alkaline AA batteries.
** With Compatible cameras only.

Size (W x H x D), mm - ¹ Except for the dust and water prevention adaptor

Canon's European CPS programme is a completely free service that offers Canon professional photo and video users exclusive access to a range of benefits. These include access to CPS support at major events; a priority repair service; and local CPS support in selected European countries. Free back-up equipment loans during repair periods are also available, depending on the level of your CPS membership. Information about CPS is now available in 12 languages — to find out more please select your CPS territory/language from the drop down menu above.

The service operates on a three-tier basis to provide a programme that’s accessible, responsive and tailor-made to the needs of professional photographers. The appropriate level of CPS membership will be automatically assigned to you depending on the number of qualifying bodies and lenses that you registered with CPS.

For CPS Video membership videographers must own one qualifying Canon professional camcorder. For a full list of qualifying CPS Photo and CPS Video products please visit the link ‘view qualifying products’ here.

The countries that currently offer the European CPS programme are: Austria, Belgium, Croatia (Silver membership only), Czech Republic, Denmark, Finland, France, Germany, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Romania (Silver membership only), Russia, Slovenia (Silver membership only), South Africa, Spain, Sweden, Switzerland, Turkey (Silver membership only), the United Arab Emirates (Silver membership only), UK and the Ukraine (Silver membership only).

Professional photographers and videographers can also register for CPS membership in the following 23 countries: Algeria, Azerbaijan, Bahrain, Belarus, Bulgaria, Cyprus, Egypt, Estonia, Georgia, Greece, Iceland, Israel, Jordan, Kazakhstan, Latvia, Lebanon, Lithuania, Malta, Oman, Qatar, Saudi Arabia, Serbia, and Slovakia. Although CPS repairs and loans are not available in these 23 countries all registered CPS members from these countries can take advantage of CPS repair and loan benefits when they travel to the 27 countries (named in the paragraph above) that do offer these services.

To find out what CPS can do for you or to register please click the link below.

Canon Professional Service

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