the first mail was sent without completion! I also tried to connect more then one slave flash via cable connection (SC18/19/AS10) in serial from the flash I used as slave. All the slave flashes were set on TTL and the main flash at the camera replied after shooting ok. I donīt know whether the additional flashes get the TTL information from the SU4-Slave flash or not. There is no description of that in the manual of the SU4. Maybe somone can explain me that technical arrangement. OTOH I realized, that itīs very important to switch off the preflashes on the main flash. Otherwise there will be a underexposure between -1/3 and -1/7 (shown at the main flash display). I switched to normal TTL and this semms to work perfectly (display information!). When my slides come back from the lab I can tell more about the results. regards Hans-Ferdinand [EMAIL PROTECTED]
