Speedlite Transmitter ST-E2 is a wireless transmitter which can control up to two Speedlite 550EX
groups set as slaves.
The transmitting range is about 12 to 15 meters indoors and 8 to 10 meters outdoors.
With Type A cameras (support for E-TTL) the ST-E2 can execute the following operations through wireless control:
- E-TTL autoflash
- High-speed sync (FP flash)
- FE lock
- Flash exposure compensation
- Manual flash (Flash output set with Speedlite)
- Multi-flash firing (Set with the Speedlites)
Battery type: 1 x 2CR5 battery 6V
(Replace the battery if it takes 30 sec. or longer for the red pilot lamp to light after you set the main switch to < I > or < HOLD >.)
User manual: Canon Speedlite Transmitter ST-E2