Okay,
After some more researching, I think I can restate my problem more clearly.
I want to use my AF-500FTZ off-camera in slave mode. As a consequence, I need to be able to disable the P-TTL or at least split the operation into a pre-flash, a delay and then the main flash.
It looks like TTL becomes the operating mode if the flash is on the camera (the 500FTZ doesn't support P-TTL), so everything work well there.
I can see that the option that I may need to go down is using a hot-shoe sync cord to connect to the flash off-camera, which will then drop down to the lowest common denominator of TTL.
Any advice appreciated.
Regards,
Matthew
