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Yongnuo RF-603N II Wireless Remote Flash Trigger N3 for Nikon D90 D600 D3000 D5000 D7000

Yongnuo RF-603N II Wireless Remote Flash Trigger N3 for Nikon D90 D600 D3000 D5000 D7000

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The new RF-603 II is improved version of RF-603, it is a remote shutter release as well as a multi-functional flash trigger which can synchronously trigger flashes and studio strobes. 
Through the transceiver based system each item can be used flexibly as trigger or receiver. 
Only 2 AAA batteries are required as power source for each item.
The 2.4GHz wireless frequency is suitable in most countries and guarantees high speed, distance and stability. Within capacious areas, the remote control distance may reach to 100m. 
The synchronization speed can reach to 1/320, depending on the situation.

Improved features:
1. Hot shoe locking system to prevent from slipping off
2. Switch on side for easy operation
3. Enhanced self-detecting system

Supports single contact triggering.
Can achieve wired and wireless remote shutter release function.
Flash Trigger: to fire the Flash Speedlite; to fire the Studio Strobe light (You need to purchase an extra 6.35mm cable to fulfill this function).
You can use ABOVE TWO FUNCTIONS simultaneousty.

This listing is for N3 version: 
For Nikon D90 D600 D3000series D5000series D7000series
Type: FSK 2.4GHz wireless remote sustem
Transmitter distance: 100M
Channel: 16 channels
Release: half-way press, full-way press
Receiver interface: one is 2.5mm socket
Studio flash light interface: Standard PC socket
Battery type: 2 * AAA (not included)
Stand-by time: Up to 45hours (TRX); up to 400hours (TX)
Item size: 80.7 * 31.3 * 25.9mm / 3.2 * 1.2 * 1.0in
Item weight: 44g/ 1.6oz (each)
Package size: 16 * 9 * 4.5cm / 6.3 * 3.5 * 1.8in
Package weight: 170g / 6.0oz 

Package List:
1 * Tranceiver
1 * Receiver
1 * Shutter connecting calbe N3
1 * Manual (English)


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  • By Mr. Ralph

    December 29, 2017

    Just recently used three of these guys (bought two kits) for a photoshoot recently. They work just like they should, put in batteries, turn them on, and fire away! Some people have complained about the transceiver that you put on your camera hotshoe not being secure, so they wrap a hair tie around it. I frankly don't see a need for this. The friction is enough, unless you're bumping and shaking all around the set. Only complaint, and this is relatively minor for me, is that the max sync speed seems only to be 1/160th. I think it's advertised as 1/250, but the black bands just show up. Not huge, because the difference between 250 and 160 in the studio wasn't huge. However, I could see this being a problem if I were outside, for example, facing the setting sun, and NEEDED that extra speed to darken things up. Oh well, we can always work around those kinds of things when (and if) they come up.

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  • By Shenanuke

    December 13, 2017

    Great value for non-TTL off-camera speedlight radio triggers. Be warned, though - advertised sync speed may fall short in reality. I'm using these on a Nikon D600 and a Nikon SB700 (as well as a Yongnuo 560ex III), and I can only sync at 1/160 with either speedlight instead of the advertised 1/200 (D600 sync speed is up to 1/200). At 1/200, I get shadows at the bottom of the frame, which makes for unusable photos. The description for this item on Amazon reads "The synchronization speed can reach to 1/320, depending on the situation it may reach to 1/250 or less." I guess "less" was promise and the reality of the situation. Then again, these triggers were super cheap. If I upgrade, I'm going for a Phottix Odin system to replace. But these'll work for now I suppose.

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  • By R. M. Watt

    December 13, 2017

    The on/off switch is located in a bad position. It is located too near the hot shoe and necessitates that you turn the unit on before you mount a flash on it or use a key or other convenient object to reach the switch. You can bet your last dollar any new triggers made by Yongnuo will have the switch located on the side. This is a minor annoyance and shouldn't cause anyone not to purchase these triggers. On the plus side of things, these are fairly small, so I keep some attached to my flash at all times and a couple more in my shirt pocket. Another plus is that they use readily available AAA batteries. This is great in that some triggers use hard to find "non standard" batteries that are expensive. I have lots of charged Eneloops that I keep in a holder in my camera bag so I don't have to worry with buying batteries for the triggers all the time.

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  • By Tech Sage

    December 10, 2017

    After much research including into expensive options such as Pocket Wizard, decided to give these affordable trigger units a try. Bought two for a simple home photo studio off-camera flash use - one unit on camera and one unit for flash. Units worked right out of the box with the default code set inside. The units performed so well (had only one miss over the course of several days) that I went ahead and procured two more so I can have two off-camera flashes. The battery life on the units units appear to be very good. My setup is around a Nikon D3100: Camera: Nikon D3100 (set in Manual mode with A=f7.1 and S=1/200) Flash units (2): Yongnuo YN560 (power level setup - 50) Wireless flash trigger units (3): Youngnuo RF-603 (1 on camera and 2 for the flashes) Hotshoe and Umbrella adapters (2): Calumet Umbrella and background stand kit: Cowboy Studio With the exception of the D3100, all the other parts in the above list were ordered from Amazon. To be clear, these units DO NOT SUPPORT TTL, if that is important for your use. I set my flashes to Manual mode and played around with the power output levels to get the right expsoure for a f7.1/200 setting on the D3100. Mighty pleased with the picture quality. I have now added Umbrellas over my flashes to get even better lighting and completly eliminate shadows. I would highly recommend this product - along with the companion YN-560 flashes from the same manufacturer - for any amateur photographer desiring to setup a decent home photo studio on a small budget (TOTAL COST excluding the D3100 of course ~$550.00).

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  • By R. R. Garcia

    December 1, 2017

    Let me start by saying that this product works just like the manufacturer says it does. This is an affordable solution for those of you looking to trigger your camera remotely using a radio transmitter or fire off strobes, speedlights and/or flashes with a wireless transmitter. This units a transceivers, which means they can act as transmitter or receiver. One thing to keep in mind. I have tested this using a Nikon D7000 and a Nikon D90. I tested each camera independently with the following speedlights: Nikon SB-700, SB-800, SB-900. The speedlights fired every time. I also fired the camera remotely using the same setup. I put one on the hot-shoe in the camera and another in the speedlight as normal. The funny thing is that if you connect the supplied wire from the camera to the transceiver when you press the shutter in the camera it fires the speedlight and vice versa. When you press the test button in the transceiver attached to the speedlight it fires the camera and the speedlight, you can't ask for more on this price range. This setup is not TTL. You have no wireless control about the speedlight power from the camera. You have to set your speedlight to manual mode and adjust the power setting to whatever you need. This will fire the speedlight in sync to the highest sync speed of your camera. In the Nikon D7000 is 1/250, faster than that and you will get the expected black bar on the bottom of the frame if you are framed horizontally. That also means, of course, that it doesn't support FP High Speed Sync. All things I can live with because when I need one I typically don't need the other. I am still using the Nikon CLS but its nice to have this kind of range and capability if you need it for this price. If you absolutely need this feature, go see Pocket Wizard they have your solution for $219-$199 a pop. I got six of this puppies for all my speedlights and both my cameras. You can't beat it for the price. If you are contemplating the possibility of buying one, go right ahead, you won't feel bad about it. This is an awesome price for these capabilities. You have a PC connection and that gives you extra flexibility in case you want to hook them up to a strobe. April 27, 2012 Update. Hello all, this is an update to add a few things. These transceivers are still working great. I have purchased the more advanced Pocket Wizard Flex TT5 flash triggers to my bag-o-tricks. I purchased three of them for now. I am not writing this here to brag but to tell you how you can still use these Yongnuo RF-603's along with the PW stuff. **Why in the world would he want to do that? I know right, crazy talk? Keep reading!** The PW Flex TT5 system has a drawback that has been well identified through out the several training videos in their website and others. The Flex system is not able to trigger the camera remotely while maintaining TTL communication between camera and flashes faster than one frame every two seconds. That may not be a problem for most people but I always try to work around tech problems even if they don't affect me now that way I have an answer for when it bites me in the future. The way I did it was assembling the PW with camera and flashes as PW recommends and then when all of that was done and all gizmos were talking to each other I proceeded to hook up the Yongnuo receiver to the camera via the GPS port as usual. I left it dangling from the camera and used another Yongnuo transceiver to trigger. It worked flawlessly. It was triggering as fast as I wanted with no noticeable delays. Notice that I never hooked up the Yongnuo gear with the PW gear. They only way the Yongnuo transceiver is hooked up to the camera is by the N3 cable as recommended by Yongnuo. This way you have radio TTL remote flash triggering along with radio camera triggering. Anyone worried about RF interference? Its a valid concern. I looked at both operating frequencies and the PW (FCC- USA Version) operates between 340-354 MHz, the Yongnuo RF-603 operates at 2.4 GHz. The amount of space in the RF spectrum is so far apart that unless the devices are physically touching each other, there should not be any interference or frequency drift. (This is my opinion and experience, this information has not been professionally tested in a lab under controlled conditons). Benefits from this setup: -Mainly, NO delay between shutter press and camera triggering. -Radio triggering on both systems, no line of sight issues. -You leave camera in tripod and flashes in light stands and keep your Yongnuo trigger in your hand while working in a studio or on location. It also means that you don't have to buy an expensive PW radio to just trigger your camera. -If you drop your Yongnuo trigger and it breaks is about $37 for a pair as opposed to $200 or so for a PW Flex. I tried this setup with a Nikon D700 and Nikon D7000 along side my speed lights: SB-700, SB-800 and SB-900. I also own Yongnuo YN-560 flashes (about $65 each) and I use them as kickers and trigger them with the built in optical slave. Yes, while all the Nikon flashes fire in TTL. The Yongnuo flashes have two modes for optical (main flash, and M2 where the flash ignores the TTL pre-flash). Now, this is what I call harmony across my entire camera bag. I don't like bickering inside the camera bag while I sleep at night. Jan 8, 2013 Update. Works with the Nikon D600 too. Enjoy, Rob

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  • By grumpy3b

    November 27, 2017

    love them BUT you cannot trigger the remote flashes using only the tranceiver, it must be triggered by the camera body. I often use the old PT-04 ghetto triggers on different channels or move a flash around to paint on a long exposure. Can't do that with these devices as while they are transceivers (Rx/Tx in one) a unit cannot act as a trigger for the flashes by itself. The above has NOTHING to do with using the remote trigger function to trigger the shutter on your DSLR body. That works fine. The range is easily 300ft in clear line-of-site for my use. A good 150ft with obstructions. I'm so pleased with these and easily I recommend these with the single caveat above.

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  • By alfonso a. tobar

    December 7, 2016

    The RF-603 wireless unit can trigger both portable flash units or speedlites, and Studio flash units as well. Apparently, the maximum flash sync speed allowed in SLR's or DSLR's is their maximum sync shutter speed for that camera provided transceiver is used as pass through for a flash unit (*). [In my Nikons D300S, 1/320s (Auto FP) and 1/250s (Auto FP) are maximum sync shutter speeds]. My tests were performed in a Nikon DSLR D300S, and maximum sync acceptable shutter speed, however, was obtained at 1/200 and below when one transceiver was used in the DSLR's hot shoe as a transmitter and another as a receiver in an off-camera flash. Therefore, I found that maximum flash sync shutter speed will decrease and this was very noticeably in my random tests. Therefore, the highest max sync shutter indicated by the manufacturer will be ONLY valid for the on-camera flash when transceiver is used as a pass-through on-camera. Secondly, the transceiver by itself can not be used to test fire remote flashes with transceivers acting as receivers in flash units. (Open Flash Test triggering not supported.) (*) 1/250 sec sync shutter speed can ONLY be obtained when Flash unit is mounted directly on the camera hot shoe as a pass through. Please see more photos at shutterbugcl DOT blogspot DOT com. I noticed a few misfires probably because I must have done something wrong. The RF-603 were tested out of the box. For a detailed review and sample photos, please visit shutterbugcl DOT blogspot DOT com. The overall performance was excellent anyway. Great results! --- UPDATE [Nov.27_2011]: I bought these units to be specifically used with the new Fujifilm X10 12 megapixel EXR CMOS Rangefinder Camerato be released by November 9, 2011 that I have already pre-ordered from AMAZON. In the meantime I decided to perform test runs to make sure everything was OK. Wireless are great for any camera model and manual flash units. Unfortunately, they do no work with new Fuji X10 or X100 rangefinder cameras. Wireless Transceiver Pins are not thin enough to communicate with their hot shoes. By LATIN IMAGE Photography latinimage DOT blogspot DOT com ---

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  • By HM

    October 23, 2017

    This trigger system is super easy to use and has worked very well. I have only had a few instances where it failed to fire my flash. Easy to pair with the Yongnuo YN 560 III I bought at the same time. You set the channel with dip switches on these and you can easily match it on the flash itself. Don't expect the wireless trigger to work unless you verify your camera has the correct input for the cable provided. Overall, these are an awesome value when you're building a system on a small budget or aren't going to be using all the time.

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  • By anotherphotographer

    October 18, 2017

    Took zero setup to configure to work with the YN-560 III for wireless triggering. Good range. I had my camera located outside, trying to get shots of the meteor shower a few nights ago and was able to trigger the camera from the warmth of my room. Unfortunately - cloud cover didn't net me any asteroid photos. Either way, the trigger worked great. Though - it should have a threaded hotshoe - so it can be connected to a light stand or tripod. Only reason it loses a star. Kinda wish they'd come with some sort of carrying case, too. But, at this price - very happy.

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  • By MattosTKE

    October 18, 2017

    I've previously used Cowboy Studio flash trigger as well as Pocketwizard Plus II's, so I know my way around remote triggers. Unable to afford 4 PW Plus II's I went with four of these Yongnuo RF-603's. My current setup with these is a Nikon D7000, SB-700 and two SB-28's. Build - The build quality seems very sturdy, tough plastic, not like the Cowboy Studio receiver & transmitter. They take AAA batteries and not watch batteries, which is great, since I have a ton of Eneloops in my bag. The shoe is made of metal, i've clamped it down pretty hard with no issues. Some people stated that you can't lock the trigger to the camera, this is true but it's on there pretty tight. The only way I can see it falling off is if you drop your camera, and if you do that you have bigger problems. Performance - The Cowboy studio receiver/transmitter would lose connectivity to each other if you did not trigger it often, so if you where shooting and adjusting your lights, you would have to press the "test trigger" button to wake everything up. With the Yongnuo's all you have to do is activate the autofocus on your camera, or half press the shutter button...this is so much better, no more black shots wondering what happened. They are advertised to sync at 1/250th, this IS NOT THE CASE. I can only get up to 1/200 second without any black bars. With both the Pocketwizards and the cheap cowboy studio's I could get to 1/250th with no problems, this is the biggest downfall to these triggers. I've tried just the D7000 & the SB-700...still 1/200th, D700 & one SB-28...still 1/200th, very disappointing. Recommendation - unless you have $130 for one PocketWizard Plus III or $520 for four in my case these triggers are a great deal. They work consistently without any missed triggers up to 4 frames/second @ 1/16th power.

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  • By Schenke

    October 16, 2017

    I wish I had switched to this sooner. For such a small price, it provides so many functions, the other brand (especially like Pocket Wizard)should feel the pressure and shameful. Pro: 1. multiple useful functions: wireless flash trigger and shutter release. which could enable single person to accomplish complex photography job. 2. AA battery based!! ( looking for this feature for long time) 3. transmitter and receiver in one unit 4. 2.4 G wireless spectrum and long range possible ( 100 meter range not tested but most of in-door photography can be done) 5. additional hot shoe!! (looking for this feature for long time) 6. additional Sync port. 7. works great with my Nikon D700 and speedlight SB-700 and speedtron 2403 (with 102 head), Sync speed 1/250 has no issues. Cons: 1. No test button; it has to be fixed to the camera and flash and then can be tested to see the connection. For this, I deducted one star. I don't think it's an issue for me but it might be issue for other people relying on TTL. So I have to list it here: it does not support TTL. However for $ 32, that's very sufficient to accomplish most strobist work!! So far I love it.

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  • By CLC

    October 16, 2017

    The Good: 1. These are very easy to use and work as advertised. 2. I only have one speedlight, so controlling it manually off camera is no big deal for me and these triggers work great with that set up. I'd definitely recommend these triggers for someone with the same situation. 3. I also find it much easier to use these as a shutter release than my infrared wireless release because I don't need to have a release pointed at the exact right spot to trigger the shutter with these. I can also be much further away and trigger the shutter as well, which may come in handy at some point. The Not So Good: 1, There is no mechanism to lock the tiggers in place either on the camera or on the flash. I have accidentally loosened the trigger on top of the camera while moving the camera around for a shot. But, I'd say that's a minor issue, not a major problem. 2. Another minor issue is that the on/off button could be better placed for easier accessibility when a speedlight is attached. 3. The biggest issue I've had with it is that the connector on the wire bent very easily within the first couple of uses. It still works, but I was disappointed that it bent so easily and have been trying to find a replacement cord so I can keep a spare "just in case." The last thing I need is for the cord to break while I'm shooting in a foreign country that I may not make it back to. But thus far I haven't been able to find a replacement cord anywhere. Regardless of the minor issues, the good outweighs the bad by quite a bit so I highly recommend these. The ease of use alone for someone like me who is typically a natural light shooter (don't work with speedlights often), is fabulous.

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  • By Jason L Ward

    August 31, 2017

    I now own 2 of these and 1 565EX ETTL. These are great manual flashes with built in radio receivers. Ill clarify. I do own a YN603N wireless transceivers too. One transervier in the hotshoe of the camera which triggers the 2 YN560 III. And the other transceiver on the yn565EX since it does not have built in wireless triggered from the Yongnuo transceiver. I have used this 3 light setup to shoot portraits and product photos with my D5100 and D610 and I love it. All of my Yongnuo stuff has worked well. When I am done with it I put everything away as it is not as durable and robust as the name brands. I will buy more gear from Yongnuo as I need it.

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  • By Adam Heironimus

    July 31, 2017

    I recently bought this as a wireless shutter release for my D3100, since Nikon doesn't make any wireless shutter releases for it. It took a little while to get it working. It seems that it needs to be plugged into the D3100's GPS port "hot". If your D3100 and Shutter Release aren't turned on while you're plugging this in, the camera won't focus and take a picture when you push the transceiver button. Once I realized this, the wireless system worked great. I'm not sure the maximum distance of these, but I took a shot from all the way across my yard (200 feet) and it fired all 10 times I pressed the release button. I don't have an external flash, so I can't attest to its wireless flash capabilities, but as a wireless shutter release, it works great. It takes most of the pain out of taking group pictures (No more running back and forth to set a self-timer)and I've gotten some great POV shots that I couldn't have gotten by pressing the shutter button on my camera. If it hadn't been for the plug-in issues, I'd give this product 5 stars. Build quality is excellent. Even with the plug-in glitch, I would highly recommend these.

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  • By Erol

    July 17, 2017

    I have to say I was surprised by the high quality of these triggers. They sync unto 250th of a second but at that speed, there is a tiny bit of shutter cutoff at the bottom. On complete white backgounds it almost looks like I gobo'd the light to fall off at the very bottom of the frame. In most cases this works great. On horizontal shots I use this as a "feature" sometimes.. On vertical shots it needs to be cropped post production since it is only on one side. On a dark background it is not an issue. If I don't want this shadow and I don't want to crop the frame later, my max sync speed is 200th of a second. Flashes have to be in manual mode, no TTL here... Range is as advertised. I can trigger flashes that are not in line of sight. I use these only when CLS infrared would be an issue. Otherwise I keep these as backup and use my su-800. Lastly, these function as a remote trigger on my d7000. I already have the dedicated Nikon remote, but that only works with line of sight and close range and it has trouble focusing unless I set the camera to auto continuous focus mode. If I forget, the the pictures are all out of focus. And with the dedicated remote, I have to move the shutter mode to remote. Using these yongnuo triggers as a remote, all those limitations disappear. I can use it with all camera settings from any angle. Focus is perfect and I don't have to switch camera settings before and after I use the remote. By the way, they still fire your flashes while using as a remote. I purchased 2 sets. I can use 3 flashes or if I need to be in the picture, I use 2 flashes and I use the 4th receiver to trigger the shutter. I love the simplicity. They all can be used as a receiver or transmitter. That's great. I use mine with rechargeable aaa batteries with no problems. On the negative side, these don't lock on the light stands or the camera. It is a nice fit, so the one on the camera does not really need a lock. But I would feel better if these locked when using them on light stands. If the umbrella is facing down, you need to use a flash mount that locks the flash in place. I use the flash stands that came with the flashes so I noticed this as a potential issue although my flashes did not slip yet... I recommend these if you are looking for a simple wireless solution. I hope this helps.

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  • By Josh N.

    June 26, 2017

    After reading a lot of reviews on these triggers I decided to dive in and buy a couple sets. They're fantastic. I've had no issues with them and they function better than I thought they would, based on the price. I didn't give much thought to the ability to use it as a remote shutter release, but after using it to activate the camera a few times I decided to buy a third set (one transceiver for each of my three flashes, one on the camera, one to fire everything and one as a backup -- it will end up on my ring-mount flash when I get it next month). I was concerned about losing significant flash-sync speed by using a low-cost wireless set up, but I haven't lost much shutter speed. I tested my flash-sync speed on my Nikon D5000 and D40 wirelessly connected a Nikon sb-24, Nikon sb-28dx and a Yongnuo YN560II. The effective sync speed on my D5000 was 1/180 sec, but my D40 kept it's ridiculously fast 1/500 sec flash-sync speed. The units aren't perfect though. The power switch isn't in the most convenient place. You really do have to dismount the flash to turn them off, it's annoying but it shouldn't be a deal breaker. There also isn't a lock on the shoe mount, but they've fit tightly in every mount I've put them in. I don't have any concerns about them falling out on there own. The hot show also isn't a perfect fit with the YN560II, but it feels fine when the flash is locked in. Long story short, if you don't have the money for Pocket Wizards, or similar brands, but you want a good wireless trigger; buy these.

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  • By Emad

    June 4, 2017

    Hello I have nikon D7000, i bought 2 kits of this wireless flash triggers, they are so nice, the device is a transceiver, so every device can act as a wireless flash and a remote trigger for your camera, it takes x2 AAA batteries, i have the genuine Nikon remote shutter release remote ML-L3, and this is 100% greater and better than it, 1- it uses radio waives vs infrared fro the ML-13. so no need to have a line on site between you and the camera body. 2- the shutter release button on the transceiver has two pushing levels. precise just like the shutter release button on the camera body, the first pushing level will focus your camera lens on the object and the 2nd pushing level will fire the trigger, VS the ML-L3 has single touch button which will focus and fire the trigger on 1 click,which might be annoying sometimes This is 100% worth its price,and i recommend it, Emad Alwari

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  • By JMac

    May 16, 2017

    Good product, works well, arrived ahead of estimated time. This product is a new item with its own operating system. It is not compatible with Model 602s. It does work well and has the added feature that you can use the unit as a remote wired trigger for your camera; if you get the cord compatible with your camera. It will do the half depress shutter to auto-focus and then the full depress to trigger. You can also half and full trigger from a remote unit up to 300' away. Any unit can be the transmitter or the reciever. Whatever unit is in the hot shoe or has its button pushed becomes the transmitter and all the rest become receivers. Overall, a great new system.

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  • By Guy M

    May 7, 2017

    I decided to do some tests to see what to expect. My Equipment: - Nikon D7000 camera - Yongnuo YN560-III flash - 2 pairs of Yongnuo RF-603N3 triggers - No-name radio triggers BestDealUSA 4 channe Wireless Remote FM Radio flash Speedlite Trigger w/ 2.5mm PC 2 receiver (for comparison) Since the D7000 can manually sync up to 1/250th, that was my initial test speed. Using each one of the RF-603N3 as transmitters and the the internal receiver in the YN560-III, I was able to use 1/250th with no issues, but no faster. Using one RF-603 as a transmitter and one as a receiver with the YN560-III operating in manual, I could not sync properly to 1/250th. The D7000 could only go to 1/200th without the black bar showing up. Using the no-name triggers and the YN-560-III in manual mode, I could sync cleanly to 1/250th, but no faster. Hope this helps.

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  • By D***I

    January 27, 2017

    These are fairly well built and worked great when I tested them with my Nikon D5100 and Sunpak off camera flash. It really is only lacking a locking ring on the hot shoe foot. After a little more testing, I'll probably be ordering a second pair. Update: I now have 2 sets of these (4 total) and am using them with an older Sunpak 544 flash and a new Metz AF-1 52. 1 on each flash, one on the camera as a remote shutter release and hand hold the 4th as a remote trigger so I can walk around and shoot from anywhere in the room. The system works well, with only the occasional misfire. I have found that although my camera has a max flash sync speed of 1/200th, I can only shoot at a max of 1/160th with these triggers without having a slight dark band at the bottom of my photos. I imagine this is because of a slight delay from the radio triggers. it hasn't been an issue for the way i shoot, but it's worth mentioning I think. I have been very pleased with the battery life on these units. I have shot well over 300 shots in a session using AAA rechargeable batteries without exhausting them to the point where they won't fire. The unit I use for triggering(transmitter) does deplete faster than the units that are receiving only for obvious reasons. From my battery charger readings after a shoot, I'd guess the receivers could easily go at least 500 fires before the batteries were exhausted. I'm still very satisfied with the triggers, especially at this price.

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