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Canon Speedlite Transmitter A

4.5 4.5 out of 5 stars 609 ratings

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ST-E3-RT

Purchase options and add-ons

Brand Canon
Compatible Mountings Canon
Camera Flash Slave
Included Components SPEEDLITE TRANSMITTER
Connectivity Technology Wireless

About this item

  • Newly designed wireless system uses 2-way radio wave communication for enhanced communication among master and slave units.
  • Achieves a transmission distance of up to 98.4 ft. / 30m, all at a 360 degree angle.
  • Up to 5 groups, or 15 individual flashes can be controlled via 1 transmitter; 8 types of custom functions, 3 types of personal functions.
  • Supports E-TTL II flash, manual flash, strobe and external flash metering.
  • Dot matrix LCD panel displays all pertinent information simultaneously and backlit control panel means easy operation. It even features an internal sound emitter.
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Top Brand: Canon

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  • SPEEDLITE TRANSMITTER
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    Canon Speedlite Transmitter A


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    Product guides and documents

    Product Description

    Product Description

    Newly-designed wireless system uses 2-way radio wave communication for enhanced communication among master and slave units. Achieves a transmission distance of up to 98.4' (30 m), all at a 360 degree angle. Up to 5 groups, or 15 individual flashes can be controlled via 1 transmitter. Supports E-TTL II flash, manual flash, stroboscopic and auto external flash metering. Dot matrix LCD panel displays all pertinent information simultaneously and backlit control panel means easy operation. 8 types of custom functions, 3 types of personal functions. Improved hot shoe contacts for more reliable information transmission and operation. Slave operation confirmation: Green Light--Lit: Radio Transmissions Okay Red Light--Lit: Not Connected Blinking: Transmission Error/ Too many units (Master units + slave units = more than 16 units) Orange Light--Lit: Sub-master transmission Blinking: Receiving remote release shooting, linked shooting signal Not compatible with earlier Speedlite models such as 580EX II

    From the Manufacturer




    Speedlite Transmitter ST-E3-RT

    For sophisticated wireless flash setups, there's nothing like the new Speedlite Transmitter ST-E3-RT*. Facilitating radio controlled, two-way wireless transmission up to 98.4 feet, among up to five groups or fifteen individual Speedlites, the ST-E3-RT represents the next generation in wireless flash systems. With operational controls similar to the new Speedlite 600EX-RT, including diverse flash metering options, and a number of flash modes, the Speedlite Transmitter ST-E3-RT makes complex lighting setups simple. With a compact design and highly reliable construction, combined with a clearly laid-out information panel and buttons with back lighting and more, the Speedlite Transmitter ST-E3-RT is an indispensible tool for advanced, professional flash photography.

    *Because it does not have an optical transmission function, the Speedlite Transmitter ST-E3-RT is not compatible with earlier Speedlite models such as 580EX II.

    Newly designed wireless system uses 2-way radio wave communication for enhanced communication among master and slave units. Achieves a transmission distance of up to 98.4 ft./30 m, all at a 360 degree angle.

    The Speedlite Transmitter ST-E3-RT facilitates radio controlled, two-way wireless transmission up to 98.4 feet, for a reliable and robust connection among master and slave units. Communicating on 2.4 GHz frequencies, the Speedlite Transmitter ST-E3-RT does not have the same directional limitations of traditional wireless optical transmitters. Where other wireless signals can be interrupted by physical obstacles, radio controlled systems excel. Fifteen transmission channels are available, selectable manually or automatically, and radio transmission IDs can be set to prevent misfiring in the event of signal interference on the same channel. With the extended, more reliable range afforded by radio transmission, ambitious photography is made easier.

    Up to 5 groups, or 15 individual flashes can be controlled via 1 transmitter.

    With the Speedlite Transmitter ST-E3-RT, up to fifteen flashes in five groups can be controlled via a single unit. Each group can be set to a different flash mode, enabling multiple configurations for creative photography. For example, with the Speedlite Transmitter ST-E3-RT, some flashes can be directed to operate according to the cameras meter reading, others can be set manually; groups can be set to overexposure or underexpose, and much, much more. With up to fifteen flashes under the control of one transmitter, wirelessly, complex lighting setups normally reserved for the studio are a breeze.

    Supports E-TTL II flash, manual flash, stroboscopic and auto external flash metering.

    For any number of shooting styles, the Speedlite Transmitter ST-E3-RT supports E-TTL II flash metering, manual flash (1/1 to 1/128) and stroboscopic flash (1/4 to 1/128, 1 to 500 Hz). Auto external flash metering is even possible when the Speedlite Transmitter ST-E3-RT is mounted to the EOS-1D X or the EOS 5D Mark III.

    Dot matrix LCD panel displays all pertinent information simultaneously and backlit control panel means easy operation.

    The Speedlite Transmitter ST-E3-RT features an all-new dot matrix LCD panel (172 x 104 dots). This new LCD displays Flash status, flash settings and wireless configuration with more detailed information in comparison to previous systems. With its new screen combined with backlit operation buttons and even an internal sound emitter, the Speedlite Transmitter ST-E3-RT is as easy to operate in the dark as in daylight.

    8 types of custom functions, 3 types of personal functions.

    To accommodate the demands of a number of different shooting situations, the Speedlite Transmitter ST-E3-RT can be configured with eight types of custom and three types of personal functions. Custom functions include: auto power off, modeling flash controls, sound, illumination and more. Personal functions include display contrast and LCD panel illumination color for both master and slave flashes.

    Improved hot shoe contacts for more reliable information transmission and operation; compact design is approx. 2.65 (w) x 2.42 (H) x 3.05 (D) in.

    The Speedlite Transmitter ST-E3-RT is built to the standards one would expect from professional Canon camera systems. A newly updated hot shoe contact ensures reliable communication between camera and transmitter. Dust and water resistance is excellent as well: all moving parts and areas surrounding the transmitters display and buttons are sealed for uninterrupted performance in harsh conditions. A new dust and water resistant adapter for the mounting foot creates a dust and water resistant seal between camera and flash. Compact and lightweight, the Speedlite Transmitter ST-E3-RT is approx. 2.65 (w) x 2.42 (H) x 3.05 (D) in.


    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    609 global ratings

    Customers say

    Customers like the quality, ease of installation, and speed of the camera flash. For example, they mention it works great as a master and slave, and triggers them flawlessly every time. Customers are also happy with wireless, appearance, and battery life. That said, opinions are mixed on value and ease of use.

    AI-generated from the text of customer reviews

    256 customers mention237 positive19 negative

    Customers are satisfied with the quality of the flash. They say it works great as a master, slave, and covers a wide area. Customers are also impressed with the reliable firing every time. Overall, customers are happy with the flash and recommend it to others.

    "...Welcome to a new world of reliability, simple setup, and battery life...." Read more

    "...I was really impressed with how the radios worked and it's so nice to have just one set of batteries and not have to hook up a bunch of external..." Read more

    "...HINT: The 580 and 600 flashes work best with lithium AA batteries. You get a lot more flashes than with alkaline batteries...." Read more

    "...Click-click-click with absolutely reliable firing every time. What a pleasure; what a relief.It's also a pleasure in a studio setup...." Read more

    60 customers mention58 positive2 negative

    Customers find the installation process of the camera flash to be easy. They say it is really simple to use and setup right out of the box. The ST-E3-RT does a great job at keeping things simple, and it allows them to effortlessly control their 600EX-RTs. They also say that the reach is amazing and it makes shooting a wedding a breeze.

    "...Welcome to a new world of reliability, simple setup, and battery life...." Read more

    "...This is pretty minor and easy enough to do. Keep in mind if using external triggers you will need one on each flash...." Read more

    "...This is a very reliable, easy-to-use flash. It replaced a Speedlite 550EX, which was quite complicated to operate...." Read more

    "...Easy as pie. For once I could switch sides, or move my assistant to the other side, without worrying about line-of-sight...." Read more

    21 customers mention17 positive4 negative

    Customers like the speed of the camera flash. They mention that the flash refresh is very fast, the head reovers quicker, and the flash fires every time.

    "...The flash recharges quickly and gets lots of shots out of a set of batteries (see note)...." Read more

    "...And the flashes fire every time...." Read more

    "...The radio triggers fire the flashes EVERY time and since it's a Canon E-TTL system radio, you still have full on-camera control of pretty much..." Read more

    "...They cycle time is amazing as well, and the menus allow for so much customization, plus are a lot easier to adjust...." Read more

    21 customers mention19 positive2 negative

    Customers are satisfied with the wireless capabilities of the camera flash. They mention that the built-in radio communications seems to work flawlessly, and the connection is almost immediate. They also appreciate the remote wireless advantage and the fully independent group controls right from their camera.

    "...The RF signaling system and fully independent group controls right from your master device will change everything for you...." Read more

    "...1. The built-in radio communications seems to work flawlessly, and the connection is almost immediate2...." Read more

    "...models, including its predecessors, are the menu system and having wireless capability. Both of those completely change the way you use a flash...." Read more

    "...Major improvements over the 580EX-II are the addition of radio wireless, longer zoom range, and the ability to control 5 groups of Speedlites..." Read more

    20 customers mention20 positive0 negative

    Customers like the appearance of the flash. They say it looks more professional than a janky piece of plastic, and is a nice addition to any professional setup. The quality of photos will turn out great, and the product is easy to use and very professional.

    "...The built in CTO gel is an awesome addition as well, and looks so much more professional than a janky piece of plastic velcro'd to the end of the..." Read more

    "...Its build is great andhas a newer more sleeker look compared to the old boxy looks of previous speedlites. If you're in the market for a..." Read more

    "...They work EVERY TIME. They are well designed and easy to use. No more struggling for me.Thank you Canon and Amazon!" Read more

    "...With the head turned slightly up, the pictures come out great. I'm still learning all the features of the flash but I'm very pleased with it...." Read more

    19 customers mention14 positive5 negative

    Customers like the battery life of the camera flash. They mention it has power to spare, has enough power to handle most event situations, and recharges quickly without overheating. Some mention that the flashes are rugged and recharge quickly without the flash overheat.

    "...Welcome to a new world of reliability, simple setup, and battery life...." Read more

    "...Battery performance is great...." Read more

    "...It kept saying it needed new batteries. If you keep it on and then close the battery compartment cover, then it will work...." Read more

    "...The batteries last quite a while with it too although it is hard to tell if they are running low since there isn't an indicator...." Read more

    56 customers mention33 positive23 negative

    Customers are mixed about the value of the camera flash. Some mention it's well worth the price and the effort, while others say it' s pricey.

    "...have to sell all your old speedlites at a huge loss, but it's worth it for your sanity...." Read more

    "...This is too expensive, you say?..." Read more

    "...They work great so far and are considerably cheaper than adding a Pocket Wizard to a new 580EX and probably similarly priced to adding a Pocket..." Read more

    "...with bounced flash, this is the perfect flash for me, and every bit worth the price...." Read more

    22 customers mention12 positive10 negative

    Customers are mixed about the ease of use of the camera flash. Some mention that the menu is very user friendly, while others say that it is way complicated to use. The settings have very easy to decipher icons that try to illustrate what they are. However, some customers say that the instructions leave a lot to be desired and the on flash menu's can be a little confusing and convoluted.

    "...I find this much easier to navigate, set modes, etc.This is too expensive, you say?..." Read more

    "...But, (for me, at least), it was not intuitive to use and I expect others may have the same problem...." Read more

    "...The radio's on these flashes are awesome and the menu system is also greatly improved...." Read more

    "...This is a major step forward for Canon Speedlites, but the menu system could be refined especially when the camera's menu system can also add to..." Read more

    Five Stars
    5 Stars
    Five Stars
    Performs as advertised with 5DS and 430RTs. Absolutely spot-on exposure. Great for product photography.
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    Top reviews from the United States

    Reviewed in the United States on June 20, 2012
    Style: 600EX-RTVerified Purchase
    244 people found this helpful
    Report
    Reviewed in the United States on April 7, 2012
    Style: 600EX-RTVerified Purchase
    83 people found this helpful
    Report

    Top reviews from other countries

    Translate all reviews to English
    Xin Ge
    5.0 out of 5 stars Very fast shipment, strongly recommend!
    Reviewed in Canada on September 16, 2019
    Style: ST-E3-RTVerified Purchase
    alovi
    5.0 out of 5 stars Excelente flash para canon
    Reviewed in Mexico on January 27, 2018
    Style: 600EX-RTVerified Purchase
    Murali dharan
    5.0 out of 5 stars Five Stars
    Reviewed in India on March 16, 2018
    Style: 600EX-RTVerified Purchase
    Amazon Customer
    5.0 out of 5 stars Five Stars
    Reviewed in India on May 15, 2017
    Style: ST-E3-RTVerified Purchase
    Danielle Conley
    5.0 out of 5 stars Five Stars
    Reviewed in Canada on December 3, 2016
    Style: 600EX-RTVerified Purchase