* Attaches to all Canon EF macro lenses (EF 180mm f/3.5L requires Macro Lite Adapter 72C).
* Twin flash heads can be rotated over 80ø angle around lens in 5 degree increments.
* Heads can be swiveled or bounced and can be removed from mounting ring for added control.
* Powerful Guide Number of 78 (feet, @ ISO 100), full E-TTL control and E-TTL features including FEL, Hi-speed sync, and FEB.
* Full E-TTL automatic flash control with compatible EOS bodies, including EOS-1D, D60, and D30 digital SLRs.
* Incandescent focusing lamps, and two different types of 1-second modeling flash allow easy focusing and previewing of lighting effects.