Yongnuo YN-E3-RT Flash Speedlite Transmitter for Canon 600EX-RT as ST-E3-RT

I've had mine since May '15 so I've put mine through the ringer a bit. I bought mine mainly because of the price and the AF assist beam compared to the Canon ST-E3. Was seriously considering the Canon version when I dumped my 580EXII for 600EX-RT but I don't regret not buying the Canon version a bit. It works perfectly with my 1Dx/5DIIIs controlling 3x 600EX-RT. The AF beam proved to be clutch, even with its somewhat off-center, funky-looking pattern.Now, for the negatives: The AF assist beam doesn't seem to work with I mount the unit to my 1Dx MkII. Everything else works but that's just unfortunate. Really hope Yongnuo can update the firmware to address this bug. Also found out the YN-E3-RT will trick the 1Dx mkII into limiting the shutter to its flash sync at 1/250 even if the transmitter is turned off. Which means you'll have to remove the unit (instead of just turning it off) from the camera if you want to shoot at a higher shutter. It's no big deal if you're just shooting around, but it's an annoying extra step while shooting a event. Was going to order a second one but I am going to wait until it'll work properly with the 1Dx Mark II.

Ive had this for about a month now and I love it compared to what I use to use, which was just some cheap wireless triggers off of ebay. I have been using this to control my Canon 600ex rt off camera outside on location in 32F give or take weather. The range is great, I have not exceeded the range of this. Power consumption, I got about 400 shots before the two rechargeable AA's died, so not bad but not great. The display has gone bezerk a few times, but keeping in mind I am using this in freezing conditions, hopefully that wont happen during the summer. And when it gets really cold the screen is slow to update as you change the power settings. This seems to be worse in manual mode than auto.My only problem is that the power adjustor is hidden in the manual mode, you have to press a few buttons before you can change the power, it should be on the home display. ETTL is a bit easier to adjust the power, you only have to press one button instead of a few.Other than that, this is a great device, well worth the $100.

Just adding one more confirmation, without firmware update it did not work with my 430ex III-RT at all, but after firmware update it's working perfectly with my 430ex III-RT (III has wireless, unlike II)I had to download two programs from the yongnuo website (I downloaded them onto a virtual machine so no virus/malware could be on my main one, it's often a bad idea to install obscure chinese software on your main computer), plugged device into usb and updated the firmware on it. 5 seconds later it was perfectly controlling both my 430ex III-RT wirelessly just like the official device, and for something like a quarter of the price.A few minutes of extra work is certainly worth saving three hundred bucks in my own opinion.Though the real drawback is I've heard if the device does malfunction sometime in the future, the cost of shipping to china, questionable repairs and wait time may make it easier to simply buy a new one.Of course, if the alternative costs as much as 4-6 yongnuo transmitters, it's hard to be mad about eventually having to buy a single cheap replacement or two.

I bought this to control both my Canon 600 EX RT's as well as my Canon 430 EX III RT's. I contacted Yongnuo and they told me it will work w/ 430 RT as long as I got the latest firmware. I updated the firmware and matched the 4 digit ID but it wasn't until I changed the channel to "auto" that everything worked fine. Now all the flashes and this affordable accessory talks just fine.Some other things to note. The AF assist cluster is not well thought out but it's nice to have. The cluster is noticeably off center towards the top of the camera and doesn't cover all the focus points. Still, it's nice to have but I think it could have been designed better.The battery door is a bit stiff and the unit sits on my 5D Mk III with a little play but overall, the build quality is not bad at all.

I was really hoping this would work with my Fuji X-T1 to trigger my Canon 600ex-RT flashes. Well it triggers them, but the shutter goes off first and then the signal gets to the flash or flashes. If you have two remote, it will fire the first one and then the second one, both delayed from when the shutter activated. Bummed. You would think it would fire at the same time, but must be something to do with the Fuji hotshoe.When paired with the Canon Camera (5DMKIII), it works flawlessly. Sync's right up to the flashes. Works just as good as the Canon version, plus it has infrared so you can have a red beam of light go out to focus in dark situations. It feels and look just like the Canon, but the buttons are cheaper and there is a less positive feel to the way the buttons and dials work. Hey, it was only $100 so can't complain. Not sure if I'm going to return it. It may come in handy during a reception at a wedding or to give to my second shooter at weddings so we can use the same flashes.

The only thing to be aware of, in my opinion, is that currently the AF assist beam does not work with the 5D Mark IV. I've used it to trigger the Yongnuo YN600EX-RTII flash, Canon 600EXII-RT on the 5D Mark IV and the 5Ds.The inclusion of the AF assist beam on the Yongnuo transmitter is GREAT as the Canon transmitter does NOT have it (which is ridiculous, IMO). The range of the Yongnuo transmitter is 100 meters whereas the range of the Canon transmitter (ST-E3-RT) is only 100 feet. So the Yongnuo transmitter will work more than 3x the distance vs the Canon.

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The best Speedlite Transmitter I am using for YONGNUO 600 EX RT and it works absolutely stunning.You just need to fix this on your DSLR and You can control Flash Wirelessly. (Which support wireless function like the one I have mentioned or Canon 600 EX RT.)

Bought this to pair with my yongnou 600 EX RT II inorder to off camera flash work. used it only once for a photoshoot and worked seamlessly. A must buy for those who are buying yongnou 600 EX RT

Product is good and compatible with Canon550D and I used external flash canon 430 EXIII RT

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