The Professional's Source Since 1973
  • Help
Ask Our Experts800.606.6969
Hello, Log InAccount & Orders

Join Bild Expo 2025 - Presented by B&H

Video Chat with a Lighting Expert - Live

Canon Speedlite Transmitter ST-E3-RT (Ver. 2)

BH #CASTE3RTV2 • MFR #5743B012
Print
Canon Speedlite Transmitter ST-E3-RT (Ver. 2)
Key Features
  • Wireless Rear Curtain Synchronization
  • 5 Groups or 15 Speedlites, Range: 98.4'
  • 8 Custom Functions, 3 Personal Function
  • LCD Information Panel, Backlit Controls
Building on the design and popularity of its predecessor, the second version of the Canon Speedlite Transmitter ST-E3-RT can help you take full advantage of all the features on flashes such as the Speedlite EL-1, 600EX-RT, and 430EX III-RT.
More Details
In Stock
Free Expedited Shipping
Protect Your Gear
Add a protection plan from $42.99
Ask an Expert
800.606.6969
See any errors on this page?

Will this support second curtain sync with Canon ...

Will this support second curtain sync with Canon RT flashes?
Asked by: John
I cant get wireless second curtain sync to work.
Answered by: Anonymous
Date published: 2022-03-27

Will Canon ST-E3-RT work with Canon EL-5?

Will Canon ST-E3-RT work with Canon EL-5?
Asked by: Timothy
Yes, but Canon's wireless system is plagued with reliability issues.
Answered by: Jeff
Date published: 2023-07-26

Will it work with both canon flash and Godox ...

Will it work with both canon flash and Godox 400pro?
Asked by: Laura
No. System will only communicate with canons protocol system.
Answered by: hectorm
Date published: 2022-04-24

Will this item support shooting in (camera) ...

Will this item support shooting in (camera) Manual mode when combined with a EOS 1 DX Mark III and a Speedlite EL-1 or am I limited to Program mode?
Asked by: John
***********Please send this to SLR Q&A **************
Answered by: Joseph
Date published: 2023-03-10

Are there any third party strobes that work with ...

Are there any third party strobes that work with this transmitter
Asked by: Blake
No, the Canon Speedlite Transmitter ST-E3-RT (Ver. 2) is proprietary to Canon's system.
Answered by: Elliot
Date published: 2023-07-28

Do you need this for off camera flash with a R6?

Do you need this for off camera flash with a R6?
Asked by: Todd
If you are using Canon brand RT flashes, you do need the Canon Speedlite Transmitter ST-E3-RT (Ver. 2) on the camera. These are some of the Canon flash options, https://bhpho.to/35Vy50c
Answered by: Rob K
Date published: 2022-03-14

Would this unit work with Metz Mecablitz MS-1 ...

Would this unit work with Metz Mecablitz MS-1 ring flash?
Asked by: Lev
No. The following system is designed and made mostly for canons protocol system. But will work with the other following flash units mentioned Bower SFD5400 Bower SFD740 Bower SFD970 Canon 600EX II-RT Canon 600EX-RT Canon EL-1 Canon EOS 80D Canon EOS 90D Canon MR-14EX Canon Speedlite 430EX II Canon Speedlite 430EX III-RT Energizer ENF-300 Metz M360 Neewer NW-670 Nissin i400 Phottix Indra500LC TTL Phottix Laso Receiver Polaroid PL126PZ Polaroid PL150D Polaroid PL160D Quantum Instruments Qflash TRIO Basic Quantum Instruments Qflash TRIO QF8 RPS Lighting D728AF RPS Lighting DPZ420AF Sunpak DF3000 Yongnuo YN600EX-RT II
Answered by: hectorm
Date published: 2022-11-06

Does this work with Sony?

Does this work with Sony?
Asked by: Sean
The Canon Speedlite Transmitter ST-E3-RT (Ver. 2) BH #CASTE3RTV2 is not compatible with Sony.
Answered by: Reuben K
Date published: 2024-01-23
  • y_2025, m_5, d_12, h_8CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_31
  • loc_en_US, sid_1621318, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo
Whatever You Need, We've Got It