Along with the announcement of the new EOS 5D Mark III DSLR, Canon also brings two new accessories for its EOS DSLR cameras. The former is the flagship model in the Speedlite line and ideal for wedding portrait and photojournalism, and both of them support Canon’s new radio-based wireless flash technology. The new Speedlite 600EX-RT
The Speedlite 600EX-RT is Canon’s first professional Speedlite on the market with built-in wireless radio transmitter, eliminating the need for accessory radio slave units, and it works with all EOS DSLR cameras and remains fully compatible with Canon’s optical-based wireless E-TTL technology. The flash features Master-Slave two-way transmission, meaning the photographer can control the Speedlite settings directly from the “Master” camera. Radio-based Wireless E-TTL can be performed with up to 15 Speedlite 600EX-RT “slave units”, used off-camera up to 98.4 feet (30m) away, and when used with 5D Mark III or 1DX, up to five groups of flashes can be completely controlled, independently, off-camera. It offers a head zoom range from 20mm to 200mm. The 600EX-RT features a weather-resistant construction and comes with gelatin filters and a dedicated filter holder to help photographers match ambient light.
The Speedlite Transmitter ST-E3-RT can also control up to five groups of flashes, up to 98.4 feet (30m) from the camera. The ST-E3-RT and the 600EX-RT both have remote shutter release capability that allows users to fire a single camera remotely or to fire up to 15 EOS cameras with Canon’s Linked Shooting feature.
Coming in March, the Canon Speedlite 600EX-RT will be available for $639.99 and the Speedlite Transmitter ST-E3-RT for $470.