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

Quick Overview

• Wireless Rear Curtain Synchronization
• 5 Groups or 15 Speedlites, Range: 98.4'
• 8 Custom Functions, 3 Personal Functions
• LCD Information Panel, Backlit Controls

Product Description

Get the most out of compatible flashes with the third-generation Canon Speedlite Transmitter ST-E3-RT. Designed to streamline advanced lighting setups, this transmitter enables reliable two-way radio communication with a range of up to 98.4', allowing control of up to five groups or 15 individual Speedlites.

It supports Wireless Rear Curtain Sync for creative effects like motion blur and light trails, while an extended minimum output down to 1/8192 makes it ideal for precise control in very low-light conditions. The built-in FE Memory function lets you lock in an E-TTL exposure setting and reuse it across similar scenes, even in complex multi-flash setups. With eight custom functions and three personal function settings, the transmitter offers extensive customization to suit your workflow. A clear dot-matrix LCD and backlit controls ensure easy operation, even in dim environments.

Key Features

• Reliable hot shoe contacts for consistent communication
• Control up to five groups or 15 individual flashes with one transmitter
• Supports E-TTL II, Manual, Stroboscopic, and Auto External flash modes
• Dot-matrix LCD displays key settings at a glance
• Backlit controls for low-light usability
• Eight custom functions and three personal function options
• Wireless Rear Curtain Sync for creative lighting effects
• Minimum output as low as 1/8192 for fine control
• FE Memory to lock and reuse E-TTL exposure settings