Optical master flash – no radio control
Like it’s predecessor the you need to set the flash Custom Function 5 to 1 to be able to use 3-groups of off-camera Speedlites, by default the macro flash will only trigger Speedlites in group C. Personally I am a little surprised that Canon have not included their incredible radio flash triggering system in this new macro flash. However on the positive side this means the flash can control a huge range of current and older models of Canon Speedlite plus several third party alternatives. Pairing the Macro Ring Lite with a 430EX II to be used as a background light would make creative macro photography quite simple.
Direct fit to Macro lenses
The MR-14EX II fits directly on the front of the Canon Macro Lenses, but if you are fortunate enough to own the EF 100mm f/2.8L Macro IS USM lens then you will also need the 67C adapter ring and for the EF 180mm f/3.5L Macro USM lens you will need the 72C adapter.
For extended use and super fast recycling the optional CP-E4 battery pack can be connected.