Canon Speedlite Transmitter ST-E3-RT (Ver.2)

Speedlite Transmitter ST-E3-RT

Newly-designed wireless system uses 2-way radio wave communication for enhanced communication among sender and receiver units. Achieves a transmission distance of up to 98.4 ft./30 m, all at a 360 degree angle.

The Speedlite Transmitter ST-E3-RT facilitates radio controlled, two-way wireless transmission up to 98.4 feet, for a reliable and robust connection among sender and receiver units. Communicating on 2.4 GHz frequencies, the Speedlite Transmitter ST-E3-RT does not have the same directional limitations of traditional wireless optical transmitters.

Key Features:

• Up to 5 groups, or 15 individual flashes can be controlled via 1 transmitter.
• Supports E-TTL II flash, manual flash, stroboscopic and auto external flash metering.
• Dot matrix LCD panel displays all pertinent information simultaneously and backlit control panel means easy operation.
• 8 types of custom functions, 3 types of personal functions.
• Improved hot shoe contacts for more reliable information transmission and operation; compact design is approx. 2.65 (w) x 2.42 (H) x 3.05 (D) in.

Where other wireless signals can be interrupted by physical obstacles, radio controlled systems excel. Fifteen transmission channels are available, selectable manually or automatically, and radio transmission IDs can be set to prevent misfiring in the event of signal interference on the same channel. With the extended, more reliable range afforded by radio transmission, ambitious photography is made easier.

For sophisticated wireless flash setups, there's nothing like the new Speedlite Transmitter ST-E3-RT. Facilitating radio controlled, two-way wireless transmission up to 98.4 feet, among up to five groups or fifteen individual Speedlites, the ST-E3-RT represents the next generation in wireless flash systems. With operational controls similar to the new Speedlite 600EX-RT, including diverse flash metering options, and a number of flash modes, the Speedlite Transmitter ST-E3-RT makes complex lighting setups simple.

With a compact design and highly reliable construction, combined with a clearly laid-out information panel and buttons with back lighting and more, the Speedlite Transmitter ST-E3-RT is an indispensible tool for advanced, professional flash photography. 

*Because it does not have an optical transmission function, the Speedlite Transmitter ST-E3-RT is not compatible with earlier Speedlite models such as 580EX II.