Canon Speedlite Transmitter ST-E3-RT (Ver.3)

Advanced Wireless Flash Control for Canon Creators The Canon Speedlite Transmitter ST-E3-RT (Ver.3) gives photographers a dependable, streamlined way to command multiple Speedlites with radio-based communication. Designed for EOS cameras with a standard hot shoe, it brings extended range, intuitive handling, and pro-level control to lighting setups both in the studio and on location. From quick on-the-go shoots to elaborate multi-light arrangements, this transmitter keeps your workflow fast, organized, and flexible. Built for Multi-Light Mastery This transmitter opens the door to controlling up to fifteen Speedlites arranged in five groups, all from your camera position. Its 2.4 GHz radio system delivers stable communication across long distances while eliminating the line-of-sight restrictions of optical triggering. With selectable channels and unique transmission IDs, it supports busy environments and ensures smooth coordination even when multiple photographers are working nearby. Precision Lighting Modes and Creative Flexibility The ST-E3-RT (Ver.3) supports everything from E-TTL II’s automatic balancing to manual power adjustments, stroboscopic sequences, and Auto External Flash Metering. Paired with compatible flashes such as the EL-1, it introduces advanced tools including wireless rear-curtain sync for motion-rich imagery, ultra-low output levels down to 1/8192 for subtle highlights, and FE Memory that allows you to keep a dialed-in E-TTL exposure locked for repeated shots. These capabilities make it a powerful asset for photographers who thrive on versatility and consistency. Clear Display and Confident Handling in Any Environment A bright dot-matrix LCD shows flash assignments, modes, and settings at a glance, even during complex multi-group setups. Backlit controls help you work efficiently in dim environments, while the transmitter’s audible cues offer quick confirmation during adjustments. Every component—from the hot shoe contact to the sealed buttons and display housing—is engineered for durability, dust resistance, and dependable performance in challenging conditions. Customizable Operation to Match Your Shooting Style With eight Custom Functions and three Personal Functions, the ST-E3-RT (Ver.3) can adapt to the needs of any lighting environment. You can fine-tune its behavior, refine the interface display, and adjust illumination preferences, ensuring the transmitter responds in a way that feels natural to you. Its compact footprint and lightweight design also keep your setup balanced and comfortable during long sessions.