It's not just the new EOS 5D Mark III that Canon has today, the photography company has also outed a range of new accessories for the DSLR including the first wireless-enabled pro Speedlite. The Sppedlite Transmitter 600EX-RT uses Canon's new radio-based wireless flash tech, and can control up to five flash groups from up to 30m away. Meanwhile, there's a new battery grip for the Mark III, a WiFi file transmitter, GPS puck and more.
The Speedlite Transmitter ST-E3-RT allows Wireless E-TTL to control up to 15 Speedlite 600EX-RT "slave units", used off-camera up to 98.4 feet (30m) away. They can be triggered from the camera unit itself, or from the new Speedlite Transmitter ST-E3-RT remote. It's also possible to use them the other way around, triggering the Mark III to take a photo from the remote.
As for the Canon Wireless File Transmitter WFT-E7A, that supports WiFi a/b/g/n along with Bluetooth and hooks up via USB to the Mark III, offering both wireless and gigabit ethernet connectivity. It can sync clocks with multiple cameras, and offers FTP, Media Server, WFT Server modes and more.
The Canon GPS Receiver GP-E2 uses either the accessory shoe or a USB connection to the Mark III, and tracks latitude, longitude, elevation and Universal Time Code, in addition to camera direction. It's compatible with the EOS-1D X and EOS 7D in addition to the new EOS 5D Mark III.
Finally, the Battery Grip BG-E11 takes up to two LP-E6 Li-ion battery packs, or six AA batteries for impromptu recharging. It has a multicontroller and a multifunction button, together with the usual array of grip controls, and is as weather-resilient as the Mark III itself.
The Speedlite 600EX-RT and Speedlite Transmitter ST-E3-RT should go on sale at the end of March, priced at $629.99 and $470 respectively. The Wireless File Transmitter WFT-E7A will drop at the end of April priced at $849.99, alongside the GPS Receiver GP-E2 at $390 and the Battery Grip BG-E11 at $490.