Wireless trigger won't trigger flash

Started 3 months ago | Questions thread
kli Veteran Member • Posts: 3,569
Re: Wireless trigger won't trigger flash


has my list of troubleshooting points, but the most likely issue (if you're sure you have the Canon versions, the flash is in radio slave mode not S1/S2, and the transmitter is seated fully forward in the hotshoe so all pins make contact) is ID codes being set on either the transmitter/flash but not on the other. The IDs have to be the same for the flash to fire. Think of it as a digital filter on top of the analog channel.

That, or, if you're using the transmitter right next to the flash, that you need to set the DIST function to 0-30m vs. the default 1-100m.

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