Hahnel Viper Wireless Flash Trigger - TTL Canon   +$174.95

With the Hahnel Viper Flash trigger you can control up to three groups of flash guns, with each group comprising of one or more flash units, which will seriously improve your ability to control light. Both the transmitter and receiver are powered by AA batteries, while the 2.5mm and mini-USB ports allow you to connect your flash unit.

  • TTL, Manual and Multi (Stroboscopic) mode control
  • LCD indicates user-friendly status of each group
  • DCM (Digital Channel Matching)
  • Over 100m range
  • Compatible with original speedlights