herb said:
the 503cw has a special cord in addition to the pc on the lens that connects the flash to the body, so you have actually two cords, one to the lens/and flash and one to the body and flash-this allows the special TTL stuff to work. I have not tried to get a long cord for the flash/body connection, but I am sure the hassy people will LOVE to sell you one.
That double cord is necessary with a
dedicated flash system, for true OTF (
Off
The
Film) exposure. Hasselblad dedicated "on-camera" flash units will work, such as (naturally) the Hasselblad ProFlash and the later (? - forgot the model). Some other flash units, made by Metz, Sunpack... (who else is out there") will work with dedicated "SCA" modules.
There IS a "Studio Flash" that can be controlled through the 503 Cx/Cw sensor - made by Braun. A beautiful, digitally controlled unit. When I hit the lottery, I'll buy one.
Otherwise, all that is necessary is a standard PC-to-whatever flash cord, from the lens PC connector to the flash unit.