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Canon Speedlite Transmitter A
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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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Product information
Product Dimensions | 3 x 2.7 x 2.4 inches |
---|---|
Item Weight | 3.88 ounces |
ASIN | B007FH1LJU |
Item model number | STE3RT |
Batteries | 2 AA batteries required. |
Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #493 in Shoe-Mount Flashes |
Is Discontinued By Manufacturer | No |
Date First Available | March 1, 2012 |
Manufacturer | Canon |
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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
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
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
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
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
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The Good:
First off, if you're a Strobist or an off-camera speedlighter, sell everything you own and get these. The RF signaling system and fully independent group controls right from your master device will change everything for you. Already using RadioPoppers or a PocketWizard FlexTT system? Welcome to a new world of reliability, simple setup, and battery life.
Going into "Gr" mode on the master flash, I can independently tell up to five different groups to operate in full eTTL mode (plus adjust each group's FEC) OR shift one, some, or all groups into M mode with full power controls on each group. I do this right from the flash itself, or from the screen on my 5d mark III.
Shooting a party with dancing? Want to have eTTL on-camera to bounce, and an off-camera light in the background on M for a little dramatic rim-lighting? No problem. All easily configured right from your camera.
Working outdoors at night with nothing to bounce off of? No problem. Tell the master unit on your camera not to flash, and it will simply operate as a master controller for the off-camera units. (If you often need a master controller with no flash, a Canon ST-E3-RT Speedlite Transmitter might save you a bit of money. )
If you get lost in the menus, use the configuration screen on your camera instead. I find this much easier to navigate, set modes, etc.
This is too expensive, you say? Consider that here on Amazon (as of this writing) a 580exII costs $530 + a PocketWizard Flex TT5 transceiver costs $230 for a grand total of $760, and you still haven't invested in the transmitter to go on your camera. PLUS you have to do on-site assembly, AND you have to deal with the finicky unreliability of that system.
Canon claims a range of 100'. I've used these in huge reception venues, and never run out of range. I guess the lawyers were setting a target they could defend? Read around the blogosphere, and you'll find people testing them to over 1000' out in the countryside.
Other changes that I love over the previous units I owned:
-They now clearly indicate when they are overheating. Both the backlight on the screen changes from green to orange, and two little "heat wave" wiggly lines appear above the speedlight's icon. (This may not affect many users, but event photogs doing bounce-flash in high-ceiling venues will appreciate this. Keep another cooling in your bag, and cycle them out.)
-When controlling off-camera flashes, the units are now aware of each other's power states. The "ready" light on the master will not come on until ALL flashes have finished cycling. Yup, they really talk to each other that much. Pretty cool.
Yes, these work with your existing CP-E4 battery packs.
The Neutral:
If you do not do off-camera flash, then yes, this is probably a bit steep. You have to ask yourself how much the additional zoom range is worth (up to 200mm on this unit vs 105 on the 580 series.) You may not feel it's worth that much.
Be cautioned that if you do not own a 2012 generation camera or newer, you will not be able to use mixed-mode with these flashes. As of this writing this means you need a 1D-X or a 5d3. If you don't have one of these cameras, you're limited to setting all groups to M, or all groups to eTTL. I believe you can still control each group's power/FEC, but double check if this is important to you.
If you do a lot of studio work and are hoping to mix speedlights and studio strobes, be cautioned that this is a brand-new RF signaling system developed by Canon. It will not integrate with your existing PocketWizard (classic, flex, or otherwise,) RadioPopper, CyberSync, Profoto Air, etc etc system. I really hope that Canon will chose to release an inexpensive, "dumb" receiver with a generic miniphone plug that can be used to trigger studio strobes, but this is just my own pipe dream. That said, you may be able to use your studio strobes in optical slave mode and get basic integration that way.
The Bad:
If you're a gel-er, you'll hate the included gel holder. Initially I was excited. It's obviously designed to allow you to cut and use your own gels, which is a nice thought. Unfortunately, the way it holds the gel produces harsh, mixed light. The holder does not hold the gel flush against the speedlight head. Instead, it allows it to arch out in front of it. The frosted clear plastic of the holder along the edges not only allows, but encourages ungeled light out around the sides. What you end up with is a bit of an Omni-Bounce ( Stofen Gold Color Omni Bounce Diffuser for Canon Speedlite 580EX Flash ) look, but with CTO out the face, and daylight out the sides. It's a color correcting disaster. The provided gel holders now sit at home, and I'm back to my previous favorite combo: LumiQuest UltraStrap LQ-126 and HonlPhoto Color Correction Filter Kit
In Conclusion:
I love these for the kind of work that I do, and cannot recommend them highly enough. I'm on the fence as to whether I'll get two more, or one more and an ST-E3-RT. (I'm disappointed that Canon dropped the focus assist beam from the new ST-E3-RT. The previous ST-E2 had one, and is my only hesitation.)
With the group mode you can have up to 5 groups total and set the power levels using either ETTL or Manual mode. I use a label maker and mark my flashes as A B C (and future will be D for the fourth flash). I still have one group left if I want to go to five flashes. If you have more than 5 flashes you can assign multiple flashes to the same group and their power settings will be the same. Using the Master you can easily switch the slaves remotely from either ETTL or Manual mode and set their power settings. When you turn on the flashes they come up quickly and link up before you are ready to shoot - mere seconds. 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 gear. These are a huge time saver.
One thing I will mention to those who may want to mix these with Studio Flashes. You can fire these from remote triggers just like the older Canon models as they have a PC input port. Even when using the external triggers to fire in conjunction with my studio lights it's still nice to be able to set up the power levels using manual levels and group mode through the master. The one thing that I discovered and is very important to note is that if you change power settings on the master for the slaves they will not receive the changed information unless you first press the TEST button on the master and I'm sure the same will be true for the ST-E3-RT. Firing the master from the synch port or even using a hot shoe adapter does not transmit the new settings. You must press the TEST button first to get the new settings over the the slaves. This is pretty minor and easy enough to do. Keep in mind if using external triggers you will need one on each flash. I could not figure out a way to get them to fire just by triggering the master in radio mode, although I am still experimenting. It would be really nice to only have to put an external trigger on the master but from what I could find you need one on each flash. I still need to read the manuals all the way through and experiment some more so I will try to remember to update my review if I find out something new.
It would be nice to see these work in group mode with older cameras such as the 5D II and 7D and that is probably my only real disappointment with the flashes. I can't see why that can't work at least in manual mode, but it doesn't unless there is a workaround I haven't found yet.
Overall I am really pleased with these flashes and look forward to giving them more of a workout as well as testing them with an external battery pack. For photographers that are on the go and want a powerful system that is more convenient in terms of space, set up time, batteries and reliability, this is the way to go.
EDIT (04/27/2012): After some more time with these flashes I still love them. I have 5 of them now and am still waiting on the wireless controller. I did come up with a much better solution for combining these with studio lights. Not sure why I didn't think of it before as it's simple and works great. I just put my 600EX-RT on top of my camera in the hot shoe so I have full control - no need for third party radios on the 600EX-RT's. I then use the synch port on the camera to fire the studio flashes. A cable runs from the synch port to the trigger port of the transmitter for my studio lights. I now have a mixed radio system with wireless control over all my lights. Awesome!