Control 600EX-RT using 70D

[jmaurin]

Hi.

Since Speedlite 600EX-RT wireless use 2.4Ghz frequency and 70D has wireles built-in (which works on 2.4Ghz too), is possible to trigger 600EX-RT using only 70D?  No the light way, but radio way.

Tks

[TCampbell]

Unfortunatley it's not enough to just work in the 2.4GHz radio spectrum... lots of things use the same spectrum (bluetooth, baby monitors, WiFi, etc.)   WiFi uses a very specific protocol and not the same as the wirleless flash protocol. 

To control a Speedlite 600EX-RT, you would either need another 600EX-RT flash, or you would need the ST-E3-RT controller.

The 70D can use it's "optical" flash to trigger the 600EX-RT if you put the 600EX-RT into optical slave mode.  Turn the lower section of the 600EX-RT so that it faces the on-camera flash and can thus "see" when the camera is signaling the flash to fire.

[jmaurin]

TCampbell, I agree with 2.4Ghz frequency.....but since hardware is operating in the same frequency as speedlite remote trigger AND is from the same manufacturer/brand, Canon could implement this remote trigger in 70D....it's possible, since hardware is alread implemented in 70D body.....is just a metter of firmware to controle wireles hardware with another protocol instead of 802.11