This is the Yongnuo YN600EX-RT, a flash with Canon RT support

Yongnuo has released official photos and specs of its upcoming Speedlite YN600EX-RT, a third-party flashgun for the Canon RT radio transmission system.

Yongnuo Speedlite YN-E3-RT and YN600EX-RT

Yongnuo has released official photos and specs of its upcoming Speedlite YN600EX-RT, a flashgun meant to rip-off rival the Canon Speedlite 600EX-RT.

Having already released the world’s first third-party transmitter to be compatible with Canon’s proprietary radio system, the YN-E3-RT, Yongnuo is following it up with its own version of the radio-enabled 600EX-RT flash. Once available — there is no precise release date yet, but we have been told to expect it in October — you could theoretically build a complete flash system on Canon’s radio transmission protocol using only Yongnuo-made accessories.

Yongnuo Speedlite YN-E3-RT and YN600EX-RT

It wouldn’t make any sense to do this, of course, as it would almost certainly be cheaper and more sensible to opt for the Yongnuo YN-622C series, which supports a wider range of both old and new flashes, or even another third-party triggering system. But assuming Canon doesn’t sue, the Yongnuos could help make expanding an existing Canon RT setup more affordable. Unfortunately the YN600EX-RT is not compatible with either of Yongnuo’s own 2.4GHz triggering systems (RF-603 and YN-622).

Manufacturer specifications

  • Guide number of 60 (Iso-100, 200mm)
  • Electronic zoom head 20–200mm
  • E-TTL and manual power control
  • “Dumb” S1/S2 optical slave modes
  • Canon RT wireless support (master and slave)
  • Canon AND Nikon optical transmission wireless support (slave mode — possibly master too?)
  • High-speed sync to 1/8000 second
  • PC sync
  • External power socket for high-voltage battery packs
  • USB firmware updates

Yongnuo Speedlite YN600EX-RT

Are you interested in a cheaper alternative to the Canon 600EX-RT, or are there better ways for flash makers to compete? Share your thoughts in the comments below.

The Yongnuo YN600EX-RT should be available in October 2014 at a price to be announced from the official Yongnuo outlet. Read our YN-E3-RT review here.

David Selby
David is a keen photographer and has been editor of Lighting Rumours since 2010. When not writing about lighting, he works as a data scientist at the University of Manchester, UK.