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CanonST-E3-RT Speedlite Transmitter
 
4.7

(based on 198 reviews)

Ratings Distribution

  • 5 Stars

     

    (157)

  • 4 Stars

     

    (29)

  • 3 Stars

     

    (6)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (4)

97%

of respondents would recommend this to a friend.

Pros

  • Lightweight (147)
  • Easy to use (146)
  • Reliable (141)
  • Packs small / compresses (93)
  • Strong construction (75)

Cons

  • Difficult to use (3)

Best Uses

  • Weddings (107)
  • Family photos (83)
  • Travel (44)
  • Portraits (42)
  • Sports/action (40)
    • Reviewer Profile:
    • Pro photographer (68), Semi-pro photographer (41), Photo enthusiast (24), Professional (23), Semi-professional (11)
    • Was this a gift?:
    • No (173)

Most Liked Positive Review

 

The Holy Grail of Flash Transmitters

Canon's new flash system is a tour de force of flash technology with RF wireless control as the centerpiece. No longer do we have to choose between RF convenience and sophisticated features like high...Read complete review

Canon's new flash system is a tour de force of flash technology with RF wireless control as the centerpiece. No longer do we have to choose between RF convenience and sophisticated features like high speed sync. We can have it all.

This unit is a 600EX-RT w/o the flash head. As such it is extremely light weight and obviously much smaller than the full flash. It only controls via RF so don't imagine using it with older, non-RT flashes. I tested mine with my 600EX-RT to a distance of 187 feet w/ flawless results.

Canon's new control layout, which is exactly the same on both the ST-E3-RT and the 600EX-RT, is greatly improved from previous speedlites in terms of the quality of the LCD display and the logic of the menu system itself. Once you get used to it you will never go back. Well done, Canon.

What is it missing? Some have complained that the unit lacks the ability to provide focus assist like the much older ST-E2. I wonder if any of the complainers ever used the focus assist on the ST-E2. It wasn't worth much. A flashlight or, better, a pen laser is far more effective in this role. It doesn't do second curtain sync. Wish it did. It doesn't appear to be firmware upgradeable. Wish it was. And I do wish the range was greater—just because I'd like it to have more range than I could ever imagine using. But, really, to call these concerns "minor" is to overstate their importance.

With five groups to work with, remote control of up to 15 speedlites, and two way communication between the system components, the ST-E3-RT is an outstanding component in what is now the ultimate flash system. I've been waiting years for Canon to upgrade their system. With the new ST-E3-RT and 600EX-RT they have a couple home runs.

VS

Most Liked Negative Review

 

I'm a little disappointed

For what it's worth, this transmitter does radio control off-camera speedlites... And that's all it does. Which is a bad thing. It no longer has the autofocus assist beam for focusing in...Read complete review

For what it's worth, this transmitter does radio control off-camera speedlites... And that's all it does. Which is a bad thing. It no longer has the autofocus assist beam for focusing in low light conditions -- and low light conditions are possibly a principal reason you're using this equipment. It no longer has the optical transmitter function -- and some of your speedlites may be legacy devices. The interoperability of this device is lacking with other Canon and non-Canon flashes currently on the market; and these flashes will continue to be on the market for a long time.

Frankly, it makes a lot more sense to purchase a 600EX-RT and use it as a master transmitter with the flash set to not discharge on exposure (yes, you can use the 600EX-RT as a low-light autofocus assist or transmitter without flashing.) The 600EX-RT gives you the same master transmitter controls as the ST-E3-RT, but in addition you get the autofocus assist beam, a backwards compatible optical transmitter capability, and a flash bulb. For just a little bit more in price.

And what about the Pocketwizards? This has virtually the exact same functionality as a Pocketwizard, but the Pocketwizard transmitter only costs two hundred dollars. Really. This is a no-brainer. Skip the ST-E3-RT and wait for Canon to release the Mark II update that also includes the autofocus assist beam and the legacy optical transmitter functionality.

Reviewed by 198 customers

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4.0

Great!

By BrianJ

from Philadelphia

Comments about Canon ST-E3-RT Speedlite Transmitter:

It's so nice not to have to have a flash on camera to control the other speedlites. I was going to but the knockoff but happy I stuck with canon.

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5.0

The perfect solution!

By Junkfoodvegan

from Brooklyn, NY

About Me Pro Photographer

Verified Buyer

Pros

  • Easy to Use
  • Reliable

Cons

    Best Uses

    • Portraiture
    • Sports/Action
    • Weddings/Events

    Comments about Canon ST-E3-RT Speedlite Transmitter:

    I've used it all, the pocketwizard flex system, plus II and III, cheap @ wireless kits,the Yongnuo YN622, the ST-E2, and this has turned out to be the perfect solution. I've only been using the ST-E3 (with 3 600EX-RTs) for a couple weeks, but so far I'm thrilled with the purchase.After a bit of light manual reading (a rarity for me), I was synced and ready to go. Though the menus on the ST-E3 and the flashes in wireless mode can be a bit complex, they are easy to get the hang of with some use. TTL works flawlessly and it is insanely easy to adjust individual flashes or groups on the fly. Though it takes a couple more buttons to adjust output with the ST-E3 than the simple dials of the Pocketwizard TT1 and AC3, I prefer the interface of the ST-E3, I feel like I know exactly what I'm going to get.This setup feels like the perfect location rig for me with a few stands and modifiers. I'm very happy with the purchase. Though the price can add up once you start buying multiple flash units, the simplicity and reliability of the setup is fantastic.

    • Was this a gift?:
    • No

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    5.0

    STe3RT transmitter

    By Charles

    from Charlotte, NC

    About Me Pro Photographer

    Verified Buyer

    Pros

    • Easy To Pack
    • Easy to Use
    • Lightweight
    • Reliable
    • Strong Construction

    Cons

      Best Uses

      • Family Photos
      • Landscape/Scenery
      • Sports/Action
      • Travel
      • Weddings/Events
      • Wildlife Photos

      Comments about Canon ST-E3-RT Speedlite Transmitter:

      Works as intended. It doesn't send changes immediately to other speedlites, you have to half press shutter to send changes. Otherwise a nice luxury.

      • Was this a gift?:
      • No

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      5.0

      Must have with the 600EX-RT

      By @JaimeChanPhoto

      from Long Beach, CA

      About Me Pro Photographer

      Verified Buyer

      Pros

      • Easy To Pack
      • Easy to Use
      • Lightweight
      • Reliable
      • Strong Construction

      Cons

      • No Focus Beam

      Best Uses

      • Family Photos
      • Sports/Action
      • Travel
      • Underwater
      • Weddings/Events

      Comments about Canon ST-E3-RT Speedlite Transmitter:

      + How I use the product:
      - Event photography (in tandem with multiple Canon 600EX-RT speedlites)
      - Portrait photography (in tandem with the Canon 600EX-RT speedlites and also select sizes of the Westcott Rapid Box for speedlites)
      - Upgraded from a pair of Canon 580EX IIs speedlites

      + What's great about this product:
      - Fairly easy to use when you read the manual. (and I don't even like reading)
      - Wireless capability frees you from a heavy on-camera setup AND extends the lighting possibilities
      - The transmitter works amazingly with the Canon 600EX-RT and eliminates the need to add pocketwizards all the time.

      + What's not great about it:
      - It should've been built with a focus beam for low-light situations.

      • Was this a gift?:
      • No

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      5.0

      Tether free and no line of sight

      By Tonkincane

      from Bozeman, MT

      About Me Semi-pro Photographer

      Verified Buyer

      Pros

      • Easy To Pack
      • Easy to Use
      • Lightweight
      • Reliable
      • Strong Construction

      Cons

        Best Uses

          Comments about Canon ST-E3-RT Speedlite Transmitter:

          This is awesome. Controlling all of my Speedlites wirelessly without line of site, makes the setup easier and allows for a lot more creativity. Love it!

          • Was this a gift?:
          • No

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          5.0

          Works great, more durable than yungnuo

          By Moth

          from NYC

          About Me Photography Student

          Verified Buyer

          Pros

          • Easy To Pack
          • Easy to Use
          • Lightweight
          • Reliable
          • Strong Construction

          Cons

            Best Uses

              Comments about Canon ST-E3-RT Speedlite Transmitter:

              Much more durable than the yungnuo - if you are planning to use this in all sorts of weather conditions (like I, as a photojournalist) this is the way to go. A bit complicated to use at first, but easy once you figure it out.

              • Was this a gift?:
              • No

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              5.0

              Speedlite Transmitter ST-E3-RT

              By Tony O.

              from Los Angeles, CA.

              Comments about Canon ST-E3-RT Speedlite Transmitter:

              The best Canon ST-E3-RT speedlite Transmitter ever....

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              (1 of 2 customers found this review helpful)

               
              4.0

              Sweet, but pricey!

              By Digitalrules

              from Seattle

              Comments about Canon ST-E3-RT Speedlite Transmitter:

              I'm glad Canon has made a radio trigger for their flagship flash. It also can fire the older 580ex, 580exII AND 430ex strobes via infrared TTL.

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              5.0

              Best transmitter I've used

              By Clint Jones

              from Tyler Texas

              Comments about Canon ST-E3-RT Speedlite Transmitter:

              This transmitter is awesome when used with the 600ex-rt's. I love not having to run back to my speed lights to adjust them.

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              5.0

              Maestro for off-camera flash

              By Dr. Bob

              from Chesapeake, VA

              About Me Semi-pro Photographer

              Verified Buyer

              Pros

              • Lightweight
              • Reliable

              Cons

                Best Uses

                • Family Photos
                • Weddings/Events

                Comments about Canon ST-E3-RT Speedlite Transmitter:

                Fantastic coordinator for off-camera speedlite use.

                • Was this a gift?:
                • No

                Share this review

                 
                5.0

                ST-E3-RT Speedlite Transmitter by Canon

                By Lezley

                from Seattle

                About Me Photo Enthusiast

                Verified Buyer

                Pros

                • Easy To Pack
                • Reliable

                Cons

                  Best Uses

                    Comments about Canon ST-E3-RT Speedlite Transmitter:

                    Great with Canon 600 Speedlight. Gave up on another system.

                    • Was this a gift?:
                    • No

                    Share this review

                    (1 of 1 customers found this review helpful)

                     
                    5.0

                    Unbelieable control and vesatility!

                    By Rob

                    from Raleigh, NC

                    About Me Pro Photographer

                    Verified Buyer

                    Pros

                    • Easy To Pack
                    • Easy to Use
                    • Lightweight
                    • Reliable
                    • Strong Construction

                    Cons

                    • None yet
                    • Non Yet

                    Best Uses

                    • Family Photos
                    • Location shoots
                    • Travel
                    • Weddings/Events

                    Comments about Canon ST-E3-RT Speedlite Transmitter:

                    I control my 3 600 EX-RT falshes with this unit. I use them for weddings and portrait sessions on location. I work 100% on location. I procrastinated about buying this unit for a couple months. I finnaly went ahead and purchased it. I am so glad I did.I can control each speedlite individually in its own group and give each one a differnet shooting mode and make all adjustments from the top of camera on the unit.No complaints so far. Everythings works as adverstised.

                    • Was this a gift?:
                    • No

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                    4.0

                    easy, fast setup; normal batteries

                    By rusty

                    from napervillle, il

                    About Me Photo Enthusiast

                    Verified Buyer

                    Pros

                    • Easy to Use
                    • Reliable

                    Cons

                      Best Uses

                      • Family Photos
                      • Sports/Action
                      • Weddings/Events

                      Comments about Canon ST-E3-RT Speedlite Transmitter:

                      uses AA batteries (same as 600ex flash)
                      vs. ST-E2 hard-to-find battery
                      fast, obvious setup;
                      goes beyond line-of-site

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                      (1 of 2 customers found this review helpful)

                       
                      1.0

                      No autofocus assist beam

                      By TVSTAFF

                      from New York, NY

                      About Me Pro Photographer

                      Verified Reviewer

                      Pros

                        Cons

                        • No Autofocus Assist Beam
                        • Over priced

                        Best Uses

                          Comments about Canon ST-E3-RT Speedlite Transmitter:

                          What a waste. No autofocus assist beam. Only way to get this work the way it should is to buy another 600 EX RT. Canon really blew it with this overpriced and NO feature glorified $ Radio trigger.

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                          (1 of 1 customers found this review helpful)

                           
                          5.0

                          Easy to use

                          By Al

                          from Waukesha, WI

                          About Me Semi-pro Photographer

                          Verified Buyer

                          Pros

                          • Easy to Use
                          • Lightweight
                          • Strong Construction

                          Cons

                            Best Uses

                            • Family Photos
                            • Weddings/Events

                            Comments about Canon ST-E3-RT Speedlite Transmitter:

                            Took it out of the box, set it up in about 5 minutes and I was ready to go. I used my Canon flash as a slave, attached it to a softbox and the pictures turn out great!

                            • Was this a gift?:
                            • No

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                            5.0

                            Easy to Use

                            By Mark

                            from San Antonio ,Tx.

                            About Me Semi-pro Photographer

                            Verified Buyer

                            Pros

                            • Easy To Pack
                            • Easy to Use
                            • Lightweight
                            • Reliable

                            Cons

                              Best Uses

                              • Family Photos

                              Comments about Canon ST-E3-RT Speedlite Transmitter:

                              great for small studio work , super easy use .

                              • Was this a gift?:
                              • No

                              Share this review

                               
                              5.0

                              ST-E3-RT Speedlite Transmitter by Canon

                              By Frank

                              from Northeast PA

                              About Me Pro Photographer

                              Verified Buyer

                              Pros

                              • Easy To Pack
                              • Lightweight
                              • Reliable
                              • Strong Construction

                              Cons

                              • A Bit Of A Learning Curve

                              Best Uses

                              • Family Photos
                              • Portraits
                              • Team Individual
                              • Weddings/Events

                              Comments about Canon ST-E3-RT Speedlite Transmitter:

                              I decided to pick up 3 Canon Speedlite 600EX-RT and a ST-E3-RT Speedlite Transmitter because AB800's and accessories were getting to be a PITA carting into the field.The ST-E3-RT Speedlite Transmitter controls all Speedlites from the camera and they can be set to different settings. The ST-E3-RT Speedlite Transmitter along with the Speedlites are a big enhancement to my process from shooting sports Team and Individual portraits...to Senior portraits to portraits with Santa. Since I don't have a studio...all my shots are in the field or the location of the client and packing, transporting and set up....Huge improvement.There is a bit of a learning curve here to set it to the 600's....one needs to be able to interpret the info in the manuals and set it up.

                              • Was this a gift?:
                              • No

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                              (2 of 2 customers found this review helpful)

                               
                              5.0

                              Great ease, consistent transmitter

                              By Justine_W

                              from Redding, CA

                              About Me Pro Photographer

                              Verified Buyer

                              Pros

                              • Easy To Pack
                              • Easy to Use
                              • Lightweight
                              • Reliable
                              • Strong Construction

                              Cons

                                Best Uses

                                • Family Photos
                                • Landscape/Scenery
                                • Weddings/Events

                                Comments about Canon ST-E3-RT Speedlite Transmitter:

                                Got it with two Canon 600ex flashes. Set up could not have been any easier. Communication to the devices is amazing- through walls and trees! Great, clear menus and ease of use!

                                • Was this a gift?:
                                • No

                                Share this review

                                 
                                5.0

                                Great

                                By Matt

                                from Mt SInai NY

                                About Me Semi-pro Photographer

                                Verified Buyer

                                Pros

                                • Easy To Pack
                                • Easy to Use
                                • Lightweight

                                Cons

                                  Best Uses

                                  • Family Photos
                                  • Weddings/Events

                                  Comments about Canon ST-E3-RT Speedlite Transmitter:

                                  Works great with 600 Flash

                                  • Was this a gift?:
                                  • No

                                  Share this review

                                  (1 of 1 customers found this review helpful)

                                   
                                  5.0

                                  Great new way to work with speed lights.

                                  By Charles

                                  from Virginia Beach, VA

                                  About Me Pro Photographer

                                  Verified Buyer

                                  Pros

                                  • Easy To Pack
                                  • Easy to Use
                                  • Lightweight
                                  • Reliable
                                  • Strong Construction

                                  Cons

                                    Best Uses

                                    • Family Photos
                                    • Weddings/Events

                                    Comments about Canon ST-E3-RT Speedlite Transmitter:

                                    I really love the ability to have complete control over my 600EX-Rt speed lights from the camera position. I can now place my lights where I want them - without regard to most line of sight issues. From the camera I can adjust the settings of each light (or group of lights) individually. But one of the most important features for me is that now I can rotate my camera vertically and not have an excessive amount of mass that is exacerbating any vibrations from the opening of the mirror. That is a big issue when a speed light is attached to the hotshoe of a camera.

                                    • Was this a gift?:
                                    • No

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