Quote Originally Posted by analoguey View Post
So are using the Vivitar as master or slave? I am confused by what you mean when you say
The Flashmaster AA is the old school studio light powerpack that provides the lighting for the pictures.

Everything else is just linkage.

The camera is electrically isolated from the electrically hot Flashmaster because the linkage is optical:

Camera --- Wein Safe-Sync --- 40v Vivitar { optical } Slave sensor --- 120v Flashmaster

I did this setup because the Safe-Sync wasn't doing a good job handling the Flashmaster directly.