Habe es gefunden, das funktioniert einfach nicht. In einer Anleitung im Yahoo-T90-Forum:
"MULTIPLE FLASH with the Hot Shoe Adapter, Canon Connecting Cords, TTL Distributor and Off-Camera Shoes:
You have the options of TTL Auto or full manual. That's it. There is no preflash, there are no fancy modes. Aperture setting controls flash output, which will be adjusted automatically via the TTL sensor in the camera. There is no way to adjust lighting ratio between flashes except by altering their distances, using the zoom on the flashes, or using neutral density over the flash(es). Those things work, though. I use three 300TL's with studio umbrellas for my amateur portraits, and it works."
Das können die Teile also schlicht nicht!
(koplettes pdf wo´s drinsteht anbei)
Gruß,
Hendrik