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| p.1 #4 · Nikon camera pc sync socket |
You could always purchase and optical trigger for you BG lights ,so no need for a long cord
The preflashes for the iTTL metering will trip the optical trigger prematurely unless one gets an "intelligent trigger," and even then it won't always work in bright ambient light or if the remote strobes are not in direct sight of the Speedlight.
The OP's idea of using a radio trigger tripped by the PC socket is more reliable.