Using a Nikon SB 700

Welcome. You can use your flash either on camera or off camera - whichever suits you for what you're trying to capture. Either way it'll be manual mode.

 

If the flash has hamual or auto modes, you should be able to use the flash. You won't be able to use the flash in TTL mode as the TTL "language" and contact locations are different. The flash can only respond to "fire" from the caera.

If the flash has an optical slave that ignores preflash, then it can be used off camera. It can also be used off camera with a generic, non-TTL radio slave. The Nikon commander mode, and Oly's remote controller mode aren't compatible.

 

What about flash voltage?

I've read that with the omd (not sure about the epm) that the voltage of the flash must be 24 volts or less. Does anyone know the voltage of th sb 700 or sb 600 ( which I have). I'm afraid to use it yet with my OMD.
Thanks,
Dave

 

SB-24, 25, 26, 600, 700, 800, 900, & 910 are all less than 6v, you're safe even if you you want to use them on the early Pen's.