Canon Speedlite Transmitter ST-E3-RT (Ver. 3) for Type A EOS Cameras with Hot Shoe and LCD Panel

The Canon Speedlite Transmitter ST-E3-RT (Ver.3) is compatible with standard hot shoe DSLRs (not multi-function shoe-equipped cameras). Key features include wireless rear curtain synchronization for capturing ambient light trails, an extensive output range (up to 1/8192 power), and FE Memory within the radio transmitter for locking E-TTL flash exposure levels. It offers radio-controlled two-way wireless transmission up to 98.4 feet, supporting up to five groups or fifteen individual Speedlites. Additionally, it features a dot matrix LCD with backlighting and intuitive controls.
Powerful Ranged Transmitter
When paired with the Speedlite EL-1, the Speedlite Transmitter ST-E3-RT (Ver.3) enhances photography with features like wireless rear curtain synchronization for capturing dynamic light trails, ultra-low flash power down to 1/8192 for low-light scenarios, and FE memory for storing and reusing E-TTL flash exposures. Its radio-controlled, two-way transmission extends up to 98.4 feet, providing a dependable connection between units. Operating on 2.4 GHz frequencies, it surpasses the directional limitations of optical transmitters, excelling in environments with physical obstructions. It offers fifteen transmission channels, manually or automatically selectable for optimal performance, and customizable radio transmission IDs to prevent interference. This enhanced range and reliability streamline ambitious photography endeavors.
E-TTL II Flash, Manual Flash, Stroboscopic, and Auto External Flash Metering
The Speedlite Transmitter ST-E3-RT (Ver.3) enables control of up to fifteen Canon RT-compatible Speedlites, organized into five groups, directly from the camera using a single transmitter. Each group can be customized with different flash modes, offering versatile setups for creative photography. For instance, some flashes can sync with the camera's E-TTL reading, while others can be manually adjusted for over or underexposure. With this capability, complex lighting arrangements, typically seen in studio setups, become effortless to manage wirelessly, facilitating seamless execution of elaborate lighting setups.
LCD Screen and Custom Controls
The Speedlite Transmitter ST-E3-RT (Ver.3) is equipped with a dot matrix LCD panel (172 x 104 dots) that provides comprehensive information such as flash status, settings, and wireless configurations for Speedlite EL-1, 600EX-RT series, and 430EX-RT units used off-camera as Receivers. Its backlit operation buttons and internal sound emitter ensure easy operation even in low-light conditions. To cater to various shooting scenarios, it offers eight Custom Functions including auto power off and modeling flash controls, as well as three Personal Functions such as display contrast adjustment and LCD panel illumination color settings for both sender and receiver flashes.
Hot Shoe Contacts
The Speedlite Transmitter ST-E3-RT (Ver.3) upholds the professional standards synonymous with Canon camera systems. Its hot shoe contact ensures dependable communication with the camera, while its excellent dust and water resistance safeguards against environmental elements. Sealed moving parts, display, and buttons ensure consistent performance in challenging conditions. Additionally, a dust and water-resistant design for the mounting foot enhances protection between the camera and flash. Compact and lightweight, the ST-E3-RT (Ver.3) measures approximately 2.7 (W) x 2.4 (H) x 3.0 (D) inches, offering portability without compromising durability.