Help, please! Canon 7d + Canon 600ex-rt + Vello TTL OCF cord = won't fire

Started Dec 30, 2012 | Questions thread
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Help, please! Canon 7d + Canon 600ex-rt + Vello TTL OCF cord = won't fire
Dec 30, 2012

Hello DPReview!

For some reason I can't get my 600ex to fire when using an off camera cord. This is my set up and my trouble shooting steps so far:

Canon 7D

Canon 600ex-rt  (x 2)

Vello OCF TTL cord 3ft  B&H Link

Vello OCF TTL cord 33ft. B&H Link

When placed directly on the 7d, both flash units will fire.

When using either OCF cord on either 600ex I can access the unit itself from the 7D and switch the unit from ETTL to Manual, change exposure, zoom etc.

But, the flash won't fire when taking a picture. :-/

I've tried Manual mode, AV, P on the 7d and the flash won't fire. Has anyone run into this problem before, or is there a newbie setting that I'm not aware of?

Thank you

Ryan

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