3rd party flash

[bjahill]

Has anyone tried a 3rd party flash on the Sigma fp via the Hot Shoe Adapter HU-11 ? Tried my Canon Speedlite 550 EX Flash on the HU-11 adapter, but my camera says that the flash is OFF...The Speedlite is in Manual mode, but the camera don't fire the flash. Any wrong/incorrect settings in camera ?

[bjahill]

I´ll think I've found the solution for my equipment:
a) Set the DNG from 14bit to 12bit (or use JPG).
b) Isolate all the pins on my flash -except the center tap.
c) Time setting: max 1/30s