Control 600EX-RT using 70D

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04-02-2015 06:55 PM
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
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04-03-2015 11:34 AM
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.
5D III, 5D IV, 60Da

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04-03-2015 01:31 PM
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
