Yes, you could buy an Off Camera ETTL Cord for Canon to control the 580EXII from the camera. Flash Zebra carries a longish one that would do:
melvin short wrote:
may i ask anyone who has experience with off camera wireless flash, what do i need extra, i have a 580exII flash and a 5d camera, and really want to know how i go about setting up to do this, ive seen the pocket wizard and need to know if i have to have 2 of them or what i need, any and all info will be muchly appreciated