
I use this trigger on my Canon EOS 5D Mark IV. I've used it with 3 Speedlites so far, using the same channel, same groups and same channels in different groups. My camera fully understands this device and it works great with the X-1C receiver. He really uses ETTL and he does it very well. Throw in a reasonable price and you don't have to spend 3x more for similar well-known brands. The only caveat is that I can't get it to use the FEB feature. All other functions work perfectly.

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