Review on Yongnuo YN 622N TX I TTL Wireless Controller by George Bell

I recently purchased these items for off camera use with flash on a Nikon D750:1. Flash YN-568EX2. YN-622N-USA i-TTL 2.4GHz Pair of Wireless Flash Transceivers for Nikon3. YN-622N-TX Wireless i-TTL Flash Controller While all components worked well together, initially the flash controller did not change flash settings as advertised. After hours of searching I finally found the answer. Numbers etc. on the speedometer itself do not change; However, they change when the 622 transmits that information to the flash as if it were a TTL signal. So if you still make adjustments manually, these adjustments will be executed as an output to the flash memory. As others have pointed out, there's no decent customer support or YouTube tutorials, and the manuals are poorly written. Of course, it wouldn't cost that much to hire someone to clean them up. For the money it's probably worth getting used to the off-camera flash.