Too bad, but thanks for the explanation.

Can you tell me if the 7D supports this correctly? (I plan buying one in the near future)

I haven't ever used 7D, so I can't give a definitive answer, but anyway... http://blog.photoframd.com/2010/01/06/canon-7d-tips-auto-focus-not-working-check-your ...

Same problem here with a 450D and a radio-triggered flash.

The flash is set to the lowest power setting, so recharge time is not a problem. It even goes to standby after some time during shooting with Helicon focus, so it probably doesn't get triggered at all.

It works fine in EOS Utility as long ...