Since its release, the Nikon D750 has been praised as one of the best full frame cameras that money can buy. It has features that outperform cameras that are twice the price. One of the little frustrating elements of this camera though, that I still see being discussed to this day, is the finicky hot shoe.
The issue with the hot shoe of the Nikon D750 is that the metal part of the hot shoe does not sit right up against the plastic surrounding. This is either because the plastic was made a little too deep, or the hot shoe was set back a little too far.
If you look at the hot shoe of most any other camera, you can see that these two pieces should sit right up against each other.
When you press a flash or radio trigger into the hot shoe, it gets stopped by the plastic part of the hot shoe. Because of this small gap though, the flash now sits just a fraction of an inch too far forward, causing the pins of the flash to be slightly misaligned.
Depending on the tolerances used by the manufacturer of the flash or radio trigger, there could be a more drastic misalignment. My guess is that because of this, more expensive flashes and triggers seem to cause less of an issue than the cheaper alternatives. For example, my Nikon SB910 flashes have never had an issue, but my Yongnuo triggers always had an issue.
When researching how to fix this, one of the main fixes I found was to place a small piece of cardboard inside that gap in order to have the flash sit in the hot shoe properly. Thankfully the fix I found is a lot easier than that. When playing around with a set of triggers that didn't seem to work, I noticed that even though the locking pin was dropped all the way down, because it was misaligned, it wasn't actually fully engaged. After wiggling the trigger around a bit, I figured out that if you gently pull back on the trigger with the locking pin dropped all the way down, that you can hear an audible click when the pin becomes fully engaged. Once the pin was fully engaged, I never once had a single issue with the trigger misbehaving. So now whenever I place a trigger or flash into the hot shoe, I push the device all the way in, drop the lock pin, and then slightly pull back on the device until I hear the pin fully engage. Problem solved.
If the trigger or flash you are using doesn't have a locking pin, you can still use this fix by pushing the device all the way into the hot shoe, and then slightly moving the device back until it aligns with the metal of the hot shoe.
Have you had issue with the hot shoe of your Nikon D750? have you had to return any triggers or flashes because you thought they did not work with you camera?