Phottix: the Nikon D750 hot shoe has different dimensions than previous camera models

Nikon D700-and-D750-hot shoe-dimensions
Phottix found out that the hot shoe on the Nikon D750 has different dimensions than previous camera models - being longer in the front (see comparison picture above). This is causing some issues with the Phottix Odin TTL trigger:

We’ve received many questions about the Phottix Odin TTL Trigger for Nikon and the new Nikon D750. “The Odin doesn’t work correctly, is new firmware about to be released?” being most common.

After much research and testing our engineering team has found the hot shoe on the new Nikon D750 is different dimensions than previous hot shoes – being longer in the front (See comparison between D700 and D750 above). This causes issues with the pins of the Phottix Odin hot shoe lining up correctly with the Nikon D750 hot shoe. The Odin isn’t alone – some of the venerable Nikon SB series have issues working properly on the D750.

In short – as the hot shoe size has changed there is little Phottix can do at present. A DIY fix is possible – buy adding a sliver of cardboard to the front of the D750 hot shoe to help keep the Odin TCU in proper alignment.

Via Phottix

This entry was posted in Nikon D750, Nikon Flashes and tagged . Bookmark the permalink. Trackbacks are closed, but you can post a comment.
  • Photobug

    Oh how manufacturers are getting so good at making small changes to hurt 3rd party manufacturers. Very interesting.

    • Spy Black

      It’s hurting their own units as well.

    • Aldo

      I don’t think this was intentional… I think it’s a precision issue.

  • Adam Mullins

    I noticed this the first day I had my D750 when I tried to use my yongnuo 622n tx. It has to be in just the right position or it won’t work. Very annoying to have 9 strobes and tranceivers and now I can’t use my tx reliably. :/

    • Nikola Rudic

      I had same problem, and of course it happens on shooting, a was so angry. When you put 622tx on d750 lock it, and then move it just a little to first pin (first pin on 622 and all other flashes is for lock) stay in position for lock, and that is good position for triger to work propertly. you will hear a little sound when that pin drop in hole, and its work. I hope that I help.

  • Clifford Martin

    Sounds like pressure needs to be put on Nikon to fix the issue, since they are the ones to have caused it. Especially if the Nikon SB series of flashes are having problems.

    • Eric Calabros

      maybe they want to say: see? half millimeter gap makes such problems, so lets introduce a newly designed hot shoe 🙂

      • Vasily Yevstygnyeyev

        Some new flash gear ! 🙂

    • Mike Gordon

      Do the Nikon flashes work? Yup. No manufacture has a responsibility to ensure gear that was reversed engineered will work.

      • Blrfl

        My 910 works perfectly.

        • fanboy fagz

          I guess the issue is with the 3rd party flashes.

        • Aldo

          Yes but check if the locking pin falls in place… I have to pull mine a bit so that it falls in the hole.

          • Nikola Rudic

            I wish that I read your comment earlier 🙂

      • Thomas

        The report said that some Nikon SBs were not working. If that is true, then I think this is a Nikon issue and I hope they will fix it. It really does not make sense for Nikon to make a camera where Nikon flashes don’t always work.

        • HF

          I didn’t read about some not working. Is there a link? My SB700 and SB910 are working perfectly, the wireless transmitters from a Chinese company, too.

      • markdstump

        Good point.

        I believe my Nikon Speedlights “headspace” (borrowing a term from another industry) at the rear, not at the front.
        If someone else makes a flash that “headspaces” at the front…that’s not Nikon’s fault.

  • Kyle

    It says Nikon SB too. Not just 3rd party. Interesting.

  • AYWY

    So which Nikon SBs have problems? Since D750 has become quite popular and successful, I was thinking SB compatibility issues would have been reported quite early.

  • Roger Botting

    First thing to check is there an ISO standard for dimensions and if so, who is not conforming to them.

    ISO 518:2006 describes the dimensions. Its 38 CHF to purchase.
    A quick check with a vernier caliper shows my D600 and D750 to have the same measurements but, that’s only a quick look.
    The placement of the proprietary electrical contacts would not be in the ISO specs, they are Nikon only. And, if Nikon will not follow their own specs?

  • scott800

    We haven’t had any problems at all with our 3 d750’s. We have used the following flashes and systems with no issues for the last 6 weddings or so:

    Nikon flashes used: SB-500, SB-700, SB-910
    PocketWizard TT5 and TT1mini
    Yongnuo YN-560-tx and YN-560-IV

    The only other flashes we have but have not yet tried are the SB800 and SB400, but I will definitely be checking them soon after reading.

    • scott800

      SB800 and SB400 both work without problems, i even tried to press forward (to the limit the locking pin would allow)
      It may be that some third party units have more play in the contacts vs location of set pin? I do not know.

    • fanboy fagz

      only problem I can think of is WTH are you shooting a wedding with a SB500? HAHAHA

      • Mike Gordon

        Because it has the LED illumination for video work…

        • fanboy fagz

          yea an all in one solution. good reason.

          @pete grady
          yea Im good with ocf. I use 3 on the dance floor at weddings for family formals, even outside when I shoot the BG.

          problem is it doesnt make a good one. too weak really. too slow to recycle 3.5 seconds where a shanny Sn600n does it in 2)

          better cheaper options but true, the led light and flash is a nice balance for all in one. still, I use a led panel for better wrap around light and there are better less expensive off camera flashes. Sb500 is just too expensive for what it gives. .

      • Can be used as a master flash for off camera. Keep trying to think.

      • scott800

        We actually keep 2 of them on us cuz they fit in a pocket but still pack enough of a punch. The led light comes in handy as well, but we rarely use it lately. We also do some overhead “crane” style shots that require a flash to be as light as possible. We put a d750+sb500 on a really tall monopod, and boom-pole style hold it overhead for a cool straight down perspective or outside in over a cliff or ledge. 14mm is a good fit for this type of shot. Additionally, they also work with pocket wizard they make great clip-on remote flashes hooked to a nano-clamp. But that’s why/how we use them for weddings.

  • Santiago Gonzalez

    Maybe Nikon is using two different hot shoes, the one on my d750 is exactly as the one on the picture on top, this may help to find different versions of the camera.

    • akkual

      Nikon’s official pictures are same as this. In fact, all the pictures I kind find with google are this one, not the all metalic one of the Phottix pic.

      Also, I know that SB-600 is hard to use with all metallic hot shoe. It goes nuts, if it’s pins are shorted together. My old china triggers had this issue.

      • akkual

        Aaa.. I checked the picture from Phottix site, and that is just some metallic hot shoe plate they have used in the picture. Probably the one they use in their triggers, but without the pins etc. obviously.

        • ninpou_kobanashi

          Ya, I think they were just showing what the misalignment would look like if the flash were not in the way.

  • Yasuo U Shashin

    I also use YN-622N-TX and realized the same thing. I just need to move the trigger slightly and check the back information screen to see if the CMD sign is on at the flash mode section. After finding this out, it’s not a big problem for me.

  • doge

    I guarantee this is a manufacturing error on Nikon’s part and not part of a bigger scheme to screw 3rd party companies. Their recent track record is reason enough to support my claim.

    • Andrew

      How can you blame Nikon, they subcontracted that part of the manufacturing to Canon 😉

  • On comparing the D700 and D750 of which I have one of each. The D700 clamshell aka the outer body/housing meets the top of the flash port pretty much flush. Whereas on the D750 there is perhaps a 0.8mm gap between the front metal flash rails and the housing.
    This is where the issues are arising I suspect.

    I highly doubt this is a deliberate move by Nikon.

    On Nikon flashes the locking pin lines up the contacts.
    On Odin flashes this must not be the case.
    Note: I do not own or have Odin flashes to try out. I do however have SB 900/700/600. They all fit perfectly.

    I suspect that the odin models continue to slide and miss the pins, irrespective whether the lock is engaged or not.

    Also to note the D750 seems to have less lateral slop than the D700 but that could be due to my D700 being older and subsequently having used the flash port more often.

  • Nguyễn Quốc Tuấn

    I facing this trouble with my trigger Yn622tx from fisrt day use, I thought trouble came from trigger, I was try to adjust position of trigger on hotshoe and it work, but sometime didn’t.
    Thanks for post information, now I understand where is problem cause and how to fix that.

  • Jeroen Wijnands

    I thought hotshoe shape was an iSO standard. Guess I was wrong.

  • whisky

    oops~ies! what color dot will they paint inside the tripod mount now?

  • Nick

    If this is intentional on Nikons part; as a way of thinning out the third party manufacturers from herd…. Then the attempt is futile. The third party manufacturers will adapt to the new hotshot and next year all their gear will fit. If this is another blunder by Nikons QC they had better get their proverbial #%&$ together and put more quality in their control. Just saying.

    • Blrfl

      It isn’t a QC problem if the shoe was designed that way.

  • Politics_Nerd

    I shoot a lot in dim locations and have yet to need to use a flash with my D750. That is one of the beautiful things about it, and along with the pro focusing system, was why I bought mine. I get the strobist thing but without the *need* for flash, I’d rather paint with available light.

    • Thomas

      Simply being a lack of light is only one use for a strobe. Many photographers use strobes even if there is plenty of light as a means of controlling the direction of some of the light or for filling in shadows.
      A camera that is capable of shooting in low light does not mean that a strobe is useless.

    • T.I.M

      I shoot weddings at the beach with 2 SB900 in day time.
      Customers don’t notice the flashes on the pictures, but flash fill in is the only way to get details on the bride’s dress (why the hell wedding dress have to be WHITE ?)

      • Politics_Nerd

        Everyone has different needs, etc. 🙂

    • Aldo

      They are also used as kickers.

  • ngiardina

    This is a documented issue. Cactus, manufacturers of the V6 triggers, identified this with the D750 months ago when I wrote to them regarding intermittent failure of TTL pass-through on their triggers. My solution was a very thin piece of jacket from a wire. I cut it to length and glued it into the gap. Everything works perfectly since the modification.

    It has caused problems with my Cactus Triggers, Pocketwizard Flex TT5’s, and Phottix Odin. Any trigger that relies on all of the pins engaging will have problems.

    If you are squeamish about modifying the camera, you just need to half-tighten the trigger into the shoe and then slide it back until the locking pin clicks into place, then fully tighten.

    Incidentally, my SB-910’s never have any issue.

    • Graham Washatka

      Can you help with a photo of your fix? Or further explanation?

      • ngiardina

        Since I read this article this morning, I have been working on a new fix with a friend of mine. Something more durable. A piece of metal 21mm x 4mm. I cut down some razor blades, which happen to be the correct thickness to a size that fits into the channel. I am working on getting them shaped and installed now.

      • ngiardina

        Dude, I’m trying but can’t attach a photo.

        Since I read this article this morning, I have been working on a new fix with a friend of mine. Something more durable. A piece of metal 21mm x 4mm. I cut down some razor blades, which happen to be the correct thickness to a size that fits into the channel. I am working on getting them shaped and installed now.

        https://goo.gl/oe1X1S

  • JCTibu

    I sold my D5300 before buying the D750…. but… my old SB700 and my new SB500 both fits perfectly in my D750…

    Maybe this is a message from Nikon saying “something”…..

  • Chris Gahler

    I ran across this same issue almost immediately. The simple fix was to simple mount the Phottix transmitter like usual and then ever so slightly pull it back before locking it in place. It works just fine after that. For reference I have had no issues with the Nikon SB910, SB900, SB400 or the SB24. I did have some issues with an SB-80DX I had lying around. That one seems to work sporatically.

  • dimitrisservis

    This is well known. Cactus already announced replacement of the hotshoe.

  • Thom Hogan

    I’m going to go a different way on this one.

    Every company has quality control and performance issues from time to time. On complex products it’s difficult not to have one.

    The thing that’s happening with Nikon is that they’re always the last to identify or report an issue, and because that’s usually so delayed in response, now the user base is looking harder for issues. And they’re finding them. This is a public relations problem, not necessarily a systemic manufacturing or QA issue (though I think Nikon has a few of those, too).

    And now that Nikon has a clear public relations problem, what we don’t see is a quick and thorough response. A proactive response rather than a reactive response. We’re also getting half-way responses, as with the 300mm f/4E firmware update, where US folk are required to pay for return shipping.

    Nikon’s a Japanese company managed by Japanese. I suspect they think that the response they’d normally perform in Japan is enough, and that all customers are like Japanese customers. But that’s not the case. Nikon is a global company and sells more of their products outside Japan than they do inside (as opposed to Panasonic, for example), and Western customers especially are not as patient or as mild-mannered when problems pop up.

    Nikon thinks that they made the transition to a global company. I don’t think they have. Remember, back when Precision was the larger division in the 90’s, Nikon was much more Japan-centric. Now that Imaging is their biggest business by far, that’s no longer the case. Yet they’re using the same approach now as before.

    • Bamboojled

      Really your going a different way?….
      Actually your going the same predictable way you always go…
      This is an issue with a third party product that has been reversed engineered to fit on a Nikon.
      This is not an issue with the D750, you however are trying to make it one.
      Get off your soapbox.
      You have become the grumpy old miserable Grandpa to the crazy uncle Ken Rockwell.

    • Mike Gordon

      Good grief Thom, you need to up your Prozac dose in your old age. How is this Nikon’s issue when their flashes work fine ?

      • Thom Hogan

        Maybe you didn’t notice it: some people have reported that their Speedlights aren’t exactly 100% reliable on D750, either. It’s something I’m currently investigating.

        It seems like there might be multiple variations on hot shoe/body alignment, and whether that gap exists or not. In theory, the pin lock should align a flash, so it’s unclear what’s really going on.

        As for how is it Nikon’s issue? Nikon doesn’t supply a radio controlled flash ability, which I and others need in a number of situations and have to buy from third parties. But Nikon also doesn’t have a third party hardware accessory program (ala Apple, et.al.) that provides a documented set of specifications that need to be met for compatibility, let alone a way to test against that. So basically, we have a very closed system that’s proprietary.

        Nikon (and Canon and Sony and most other camera companies) are operating on the old school closed, proprietary system idea. We saw this in the PC business early on, and we all know what happens when you have standards or openness: new abilities and innovation ensues.

        The Japanese camera business resembles the old Japanese PC business, pre-adoption of Windows. The reason why the Japanese PC business failed is because the competition from the West was more open and to standards, not closely-guarded secrets. Developer programs opened up innovation and extension of the ecosystems in ways that the Japanese couldn’t match.

        The same thing is happening to cameras, only via the smartphone route. Larger ecosystems have been created than for cameras, attracting the money and talent.

  • Jeff

    I have the Odin and have experienced the problem. Yes, it can be made to work if you back the transmitter out of the hotshoe ever so slightly and then tighten it down. But if you are shooting a wedding or event where you’re likely to bump into people or things, I dread having to adjust it multiple times during a shoot. There is a thread on dpreview discussing this issue, and a number of D750/Odin users have found a solution in buying a Pixel TF-322 hotshoe adapter. It’s available on Amazon or at Adorama.

  • Fredrik

    “In short – as the hot shoe size has changed there is little Phottix can do at present.”

    Well Phottix can design a new device that will fit all the Nikon cameras just as Nikon Flashes. Bad design by Phottix.

    • decisivemoment

      If it has broken compatibility with Nikon’s own flashes, I don’t think Phottix is the problem. I think Nikon is the problem.

      • EnglishPaul

        Photix say it has broken Nikon flashes. No one else seems to be finding a problem with Nikon flashes. This is a Photix problem and they need to fix it. It’s not up to Nikon to ensure compatibility with every third party product out there.

        • whisky

          “no one else” in a relatively small sampling … plus one person who posted about their SB-80Dx.

          a hot shoe is supposed to be a “standard fit” with no wiggle room for error. what next … filter threads which are slightly off pitch?

          • EnglishPaul

            If we were talking about filter threads I’d agree with you as they’re a much more universal standard. A hot shoe design however can be totally propietery like Sony’s for example. It can be changed by the manufacturer at any time and they’re under no obligation to ensure 3rd party peripherals are supported. Nor should they be. Look at Apple. Apple don’t even support their own last gen products half the time. If this was an issue affecting Nikon’s own products and given the number of D750s sold I’m sure it would’ve been raised by now. Had Phottix produced a better design with more positive location there would be no problem. Phottix need to come up with a solution and support their customers rather than expecting Nikon to.

            • whisky

              hmmmm. the ISO spec for an accessory shoe of this sort is ISO 518:2006. people can google it. the dimensions are fixed. i agree with you that the contacts are proprietary, and if due to the dimensions being out of spec, the contacts will become non aligned.

              could third parties design their contacts (at greater expense) to mechanically ensure proper contact under these conditions? … yes!

              could Nikon have built the D750 so that like nearly every previous camera it conformed to ISO 518:2006? … yes!

              if there were a legitimate reason for this deviation from ISO, could Nikon have informed their customers (as a courtesy) prior to purchasing the D750? … yes!

              the best practice, if it wasn’t just a sloppy oversight, would have been for Nikon to inform customers the camera had a deviation from ISO. that’s the public relations thing Thom previously mentioned. it seems that now they’ve dumped this on the customer to figure out. IMO … that’s uncool.

            • EnglishPaul

              You hit the nail on the head; Nikon have engineered and manufactured -at greater expense- a product which ensures the pins are positively located. It’s reflected in the price they charge. The tolerances of the hot shoe could simply change through use or abuse also and you’d have a reasonable expectation that your accessory would keep working. Phottix have cut corners to gain a price advantage and have been caught out. They need to engineer a better product. Thom seems to be expecting Nikon to spot other manufacturers errors before they do now and proactively correct them. That’s not possible. There are hundreds of third party accessories from which Nikon gets no profit so why expect them to spend money checking other manufacturers engineering? No company is ever going to do that unless they’re paid to certify another’s design.

  • Graham Washatka

    This makes me so incredibly happy. I was delaying sending my Odin unit back to Phottix for repair… but China shipping and jobs got in the way. I have realized how dependent I am on the unit.

    The Odin magically worked for me on one shoot… now I know why!

    Now to get it to work consistently.

  • stormwatch

    Well, Photix has to move from copy + paste 3rd party company to the serious business which tests their products with every new generation of DSLR camera. The blame is only on them. They have to adapt to Nikon, not Nikon to them.

  • you can add a photo to the comments section

  • Felix_C

    These products are reversed engineered to fit. If they don’t understand why Nikon did something, then it will bite them in the rear later. Nikon does not release the specs on their hot shoes, manufacturer’s come up with a way to work with them. The picture above shows a very sloppy interface that Phottix designed, It may have worked with some Nikon cameras in the past, but if they are not privy to Nikon’s design tolerances, then a new camera, which still meets Nikon design specification, may not work with 3rd party products. A good example is lenses. How many 3rd party lens manufacturers have had to come up with new firmware for their lenses to work with new Nikon cameras? Phottix did not understand or took a shortcut and now their product does not work. It is not Nikon’s responsibility to work with 3rd party products,

  • Graham Washatka

    That piece just wedges in the front of the shoe to stop the flash unit where it “should be”?

    • ngiardina

      Yep. I have more machining to do, but it will end up looking like a rectangle with notched corners. It works exactly the same as my wire jacket fix, just more awesome.

  • YS

    It seems most don’t understand the meaning of “venerable”.

  • Len Spoden

    I have had a number of problems with my Nikon D750 hot shoe working with the Profoto trigger and the Paul Buff triggers. I sent it into Nikon to be fixed but they said the problem was the triggers. They work fine with my D4 and D810 … but not the D750.

  • David

    Everyone is bashing Phottix, but other Nikon flashes have similar problems on the 750. Why would Nikon change such a seemingly minor part other than to design in obsolescence and move folks up to newer flashes?

  • Len Spoden

    I have had problems using the Profoto and Paul Buff triggers with the Nikon D750. They work fine with my D4, D810, and D3S, but they fail intermittently with the Nikon D750. I sent the camera into Nikon to be repaired but they said it wasn’t their problem. Thanks Nikon.

    I won’t use my Nikon D750 with remote triggers anymore. I even have had problems with my Nikon Flashes with the D750. I have lost all confidence in this camera using the hot shoe.

  • Aldo

    Mine has the gap serial number 3036XXX. From closely inspecting this I can theorize that nikon didn’t intend for this gap to be there… there is an indentation on the actual camera body for the metal shoe to fit in… however it is not positioned far enough for the indentation to be needed… this is what leads me to believe that it is the position of the metal shoe that is slightly off…. Although my sb 910 works fine… I did notice that I have to pull it a bit (once fully in) in order for the locking pin to fall in the hole.

    Hay caramba nikon… when is this gonna end… not a big deal… but sigh…

    • EnglishPaul

      The gap is just for clearance though. To use it for positive location of the contacts would entail controlling the gap too precisely during assembly. Nikon put a locking pin in to obtain the correct register for the contacts. Phoenix should’ve done the same.

      • Aldo

        In my case the locking pin doesn’t engage unless you pull the flash or if you don’t push it all the way in. I don’t think that’s how it was intended to work.

  • Ric

    Sounds like a 3rd party problem, not OEM.

  • Captain Megaton

    This happened because the Phottix unit was designed to butt up against the front of the hot shoe, while Nikon flash units butt up against the back end of it, plus a locking pin?

    So if Nikon changed the length of the rail front-back, Nikon units are not concerned, but Phottix gets out of alignment?

    If that’s really the story here, its simply incompetent reverse engineering by Phottix. Nikon can very rightly tell Phottix and the people who bought their products to get stuffed.

    If on the other hand its yet another manufacturing screw up by Nikon which just happened not to affect the Nikon branded compatible flashes, then its the same end result but obviously one is more sympathetic to Phottix.

    I’ve always thought that it is in Nikon’s best interest to build a healthy & reliable 3rd party ecosystem. Nikon of course disagrees.

    • Aldo

      Third party definitely don’t have the precision and quality control that a company like nikon has… but I think there is a slight misalignment of the metal plate hot shoe. At the same time… it is the precision quality of the hot shoes found in nikon flashes that make them less likely to miss the contacts and missfire/malfuction… but I can confirm the locking pin on my sb910 doesn’t alight and lock without me pulling on the flash.

    • Ric

      “This happened because the Phottix unit was designed to butt up against the front of the hot shoe, while Nikon flash units butt up against the back end of it, plus a locking pin?”

      DING DING DING.

  • Aldo

    https://flic.kr/p/susdVc

    Using b&h photos… There’s definitely something happening there with the d750… scale isn’t exact but you get the idea.

  • ngiardina

    For all of those that are of the “cheap knockoff 3rd party china sucks” camp, my Pocketwizard Flex TT5’s and MiniTT1 have the same problem. I have heard reports of the Profoto AIR-TTL-N having problems.

  • Bamboojled

    Wrong….The only folks who have made any comments are with 13 year old flashes like the SB80Dx which is not intended to work with the feature set of the camera.
    I have not seen anyone have any issues with the SB600, SB800, 900, or 910. so no your wrong.

  • Bamboojled

    So it’s their (Canon, Nikon, Sony) fault that they do not supply everybody with every specification available so that the third party manufacturers can reverse engineer product that they don’t manufacture or endorse.
    And then if there is any failure in the system due to those third party brands, they can claim that the specifications came from Nikon or Canon so blame them.
    Come on, be realistic.

    • Thom Hogan

      You don’t seem to understand the difference between “closed systems” and “open systems.” Canon and Nikon have pretty much totally closed systems. Sony, with the PlayMemories thing and their documenting the E-mount for third parties has something in between a totally close system and a totally open system.

      Given equal choices but one being open and the other closed, I’ll take the open system every time, because third parties can and will come in to provide options the originator doesn’t, and those things generally work.

      I’ve watched Nikon tweak the flash system constantly since the D1 appeared, and I’ve watched third parties continually try to keep up with their reverse engineering, but often get caught by small things that create incompatibilities. I’d much rather have Nikon document and support third parties.

      The whole “blame the other guy” thing has a long history in tech. The software guys say the hardware is the problem, the hardware guys say the software is the problem, for instance. But the tech business also has a long history of companies that embrace working with others succeed, while those that continue to stay proprietary and defensive tend to go away.

      So yes, I’m realistic about this. Nikon needs to stop being such a close shop. Their biggest threat is Sony, and Sony is a far more open shop now than any of the other camera companies.

  • After reading this, I met up with Nikon Canada and tested the Cactus V6 and RF60. They work perfectly on the D750. TTL Pass-through with an SB-900 and Metz 64 AF-1 worked seamlessly. I think the issue is more with Phottix, YN and other online brands.

    • ngiardina

      Will, I have 6 Cactus V6’s. All of them can be made to work on both of my D750’s, but intermittently. I also have 3 PocketWizard TT5’s and one TT1. All of them can be made to work as well, but fail intermittently if you don’t back them out of the shoe ever-so-slightly after inserting them.

      • I hadn’t read all the comments before I tested. When I put the V6 on the D750, I simply pushed it in. I didn’t push it all the way … it seemed to stop and then I locked it in. I guess if you push your trigger or flash as far as it will go, then you might run into this issue. Since I don’t have a D750 handy today, I’ll ask the Nikon guys to look at this.

        • ngiardina

          Check out the thread called “D750 Compatibility” on cactus-image.com under the community->v6->v6 compatibility

  • After reading this, I met up with Nikon Canada and tested the Cactus V6 and RF60. They work perfectly on the D750. TTL Pass-through with an SB-900 and Metz 64 AF-1 worked seamlessly. I think the issue is more with Phottix, YN and other online brands.

  • ngiardina

    Here is my final fix for this issue. It is a small piece of metal that ended up at 16mm wide and 3mm tall. The thickness is .4mm. It is press-fit into the gap. All of my triggers work perfectly.

    • Aldo

      I can’t think of anything wrong with this… other than the forces exerting on the shoe plate which is design to withstand such forces in the first place. Did you try anything plastic instead?

      • ngiardina

        Exactly my thoughts. This part of the camera is magnesium and the shoe is the toughest part.

  • Spr Cmd

    I have something like this with my D5100 and Yong Nuo 622 TX. If I insert the remote to the hotshoe and pushed it all the way forward, sometimes group A will not fire. I just nudge it back a bit, then all works.
    I don’t think this is a Nikon issue, but more of less tight tolerance on the 3rd party units. Interestingly, using my SB-910 and SB-700 work just fine without needing to adjust anything.

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