Metz 60ct-4 flashs can be synched via metz or other 3rd party slave adapters. These adapters can be either radio controlled or synched via the main flash connected to your camera. The 60ct-4 can work with SCA adapters if you buy the correct adapter cord. I don't remember the model number for the cord but it has a shoe mount sensor that connects to the SCA adapter for nikon and it should let you shoot the flash in manual and Automatic modes while triggering the second 60ct-4. You should be able to find the cords and adapters on ebay and B&H and Adorama should also be able to better advise you. If you are going to be shooting with other flashes around that are not under your control I would recommend that you consider radio control like the pocket wizard as this is the only way to guarantee that you are triggering your flash and not someone else doing it for you with their flash. Metz 60ct-4 manuals used to be available on line on the metz web site.
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