Originally posted by fwbigd You will need a transmitter and receiver to fire the flash off camera, or an on camera commander flash to fire the off camera flash. I would recommend two Cactus V6ii transceivers. This will allow you to do HSS with the off camera flash. You can purchase the transceivers from either B&H or Adorama. They are approximately $95 each.
The Cactus triggers are a little spendy but a great option. If you want to save some money, you lose remote control zoom and HSS by going with the original Cactus V6 triggers.