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

For professional photographers seeking advanced flash control, the ST-E3-RT Speedlite Transmitter Version 3 is a powerful tool that supports Canon DSLRs with a standard hot shoe. This upgraded version maintains popular features from its predecessors, including wireless rear curtain synchronization, which captures stunning ambient light trails and conveys a sense of speed for moving subjects.

The ST-E3-RT Speedlite Transmitter Version 3 boasts an impressive minimum output range, reaching as low as 1/8192 power, providing ample opportunity to work in low light conditions. The FE Memory feature is integrated into the radio transmitter, allowing you to lock-in an E-TTL flash exposure level even in complex multi-flash setups, and continue to use it for the same scene or subject.

This device offers radio-controlled, two-way wireless transmission up to 98.4 feet, enabling control of up to five groups or fifteen individual Speedlites. The dot matrix LCD with backlighting, intuitive controls, and more, make this transmitter a user-friendly device for photographers at all levels.

When used with the Speedlite EL-1, the ST-E3-RT Speedlite Transmitter Version 3 provides additional benefits such as wireless rear curtain synchronization, minimum flash power as low as 1/8192, and FE memory for storing E-TTL flash exposure.

The ST-E3-RT Speedlite Transmitter Version 3 operates on 2.4 GHz frequencies, ensuring a reliable and robust connection among sender and receiver units. Unlike traditional wireless optical transmitters, it does not have directional limitations, making it a superior choice for ambitious photography.

Supporting E-TTL II Flash, Manual Flash, Stroboscopic and Auto External Flash Metering, this transmitter allows control of up to fifteen Canon RT-compatible Speedlites in five groups from the camera, via a single transmitter. Each group can be set to a different flash mode, enabling multiple configurations for creative photography.

The ST-E3-RT Speedlite Transmitter Version 3 features a dot matrix LCD panel that displays all pertinent information simultaneously. The backlit control panel and internal sound emitter make it easy to operate in both daylight and dark conditions.

With eight types of custom functions and three types of personal functions, this transmitter can be configured to meet various shooting demands. The high-performance hot shoe contacts ensure reliable information transmission and operation. Its dust and water-resistant design ensures uninterrupted performance in harsh conditions, making the ST-E3-RT Speedlite Transmitter Version 3 a durable and versatile tool for professional photography.