Overexposed through "Omnibouncer"!?

[Jussuff]

I do want to use a diffusor when doing portraits and so I bought a Stofen Omnibouncer. After doing several shots, I was very surprised though: Just attached on my Metz mecablitz 44AF-4C together with EOS 10D it produces clearly overexposed photos. Of course the light is much softer while dispersed, but the photos are heavily overexposed. I did shoot in automatic modus (TTL and E-TTL) and would like to get some advise from here. To me it makes no sense why it doesn't work. Does anybody have similar experience with this? :roll:

[Vegas Poboy]

If your're going to shoot fully auto try using the flash compensation on the 10D and see what results you get. You can adjust the camera flash -/+ 2 stops. Please let us know if this works.

[Scottes]

FEC has worked fine for me with an OmniBounce on my 420EX. It does take a bit of twiddling sometimes.