>
> Sorry if I'm being dense, but how? There is no jack for an external
> power supply/battery pack, and the manual says "An external power pack
> cannot be used with the 420EX."
>
I made the adapter to fit the 4 AA batteries compartment, as long as the
flash is concerned, it's just a 6VDC supply, the flash just doesn't know
that rather then the puny little AAs, it's now 4 to 6 AHr of real batteries.
Regards,
Ken
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