Canon Speedlite Transmitter ST-E3-RT

Radio-Frequency (RF) Wireless Control 

Operates on a reliable 2.4 GHz radio frequency, allowing for robust communication between the transmitter and your flashes without the need for line-of-sight. This is a significant advantage over traditional optical-based systems. 

Master Control of up to 15 Flashes 

As the master unit in your lighting system, the ST-E3-RT can control up to 15 separate Speedlite flashes across up to five groups, giving you unprecedented control over complex lighting configurations. 

E-TTL II & Manual Flash Control 

Offers full compatibility with Canon's E-TTL II automatic flash metering system, ensuring accurate and consistent exposures. It also provides complete manual control for advanced users. 

Extended Wireless Range 

Provides a working range of up to 30 meters (98.4 ft.), allowing you to place your flashes in a variety of creative positions, even in large spaces. 

Intuitive User Interface 

Features a large, clear LCD panel with a backlight and an intuitive button layout, making it easy to see and adjust your settings in any lighting condition. 

Durable & Weather-Sealed 

Built with a dust and water-resistant design that matches Canon's professional-grade camera and lens bodies, ensuring reliable performance in challenging environments. 

Versatile Shooting Modes 

Supports a variety of shooting modes, including E-TTL II, Manual, Multi Flash, and Ext.A/M modes, giving you the flexibility to adapt to any creative brief. 

• Canon Speedlite Transmitter ST-E3-RT
• Soft Case
• Limited 1-Year Warranty

Trigger Type: Radio transmission wireless Speedlite transmitter
Range: Approx. 98.4 ft (30 m)
Power Source: 2 × AA/LR6 Alkaline Batteries (Ni-MH and Lithium batteries also supported)

Battery Life: Approx. 10 hours continuously with AA/LR6 alkaline batteries

Groups: 5 Groups or 15 Individual Speedlites