Canon ST-E2 Speedlite Transmitter

Product Features

The Canon ST-E2 Speedlite Transmitter is a dedicated E-TTL wireless flash transmitter that can control an unlimited number of Canon flashes, in two separate groups; A and B. The ST-E2 sets and controls all functions of its slave units. The flash output ratio between groups A and B can also be adjusted from 8:1 to 1:1 or from 1:1 to 1:8.

The ST-E2 is line-of-sight dependent though, so if you need to fire your flash through a wall consider renting a PocketWizard MiniTT1 and an AC3 ZoneController instead.

Note: 420EX/430EX can not be used as the master slave to trigger other flashes.