Attaches to select canon macro lenses. adapter ring may be required.
Guide number: 14m at iso 100
Independently variable dual flash tubes for creative lighting control
Led modelling lamps make composition and focusing easier
Compatible with Canon E-TTL / E-TTL II Twin-Tube Design & 12 Custom Functions Guide Number: 14m at ISO 100 Attaches to Select Canon Macro Lenses. Adapter ring may be required.