Direct- sync, shoe-mount flash with E-TTL/TTL autoflash control and wireless transmission/reception (E-TTL preflash, AF- assist beam, auto zoom, and bounce flash). Compatible Cameras
To prevent your sender unit from firing another photographer's receiver units, four channels are provided to differentiate your receiver units from unrelated ones. The sender unit and receiver unit(s) in the same wireless flash system must be set to the same channel No.
Make sure the sender unit's pilot lamp is lit and the receiver units are ready Press the pilot lamp to test the wireless transmission Focus the subject and take the picture.
1. As with studio flash units, you can set the receiver units flash output yourself for wireless or manual flash photography 2. For wireless manual flash photography with Wireless Transmitter ST-E2. On a receiver unit with the wireless selector set to <receiver>, press the <MODE> button for at least 2 sec.
