What advantage do I get if I use "Y" (dual) sync cords as compared to "I' (single) cords? I am going to be using the strobes and camera in full manual mode. With a single cord, I can just set the flash power manually on Strobe 1 and set Strobe 2 as a slave. Am I correct in thinking that with "Y" sync cords, I can control the power of the strobes simultaneously and that's about it?
Thanks.
