Can a Canon 70D trigger a 600EX-RT by radio, or do I need a transmitter?
Asked 9/23/2014
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I use a Canon 70D with a 580EX II and find the optical slave setup limiting because it requires line of sight. If I buy a Canon 600EX-RT, can the 70D trigger it using the flash’s built-in radio system, or would I still need an on-camera radio transmitter such as the ST-E3-RT?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
11y ago
2 Answers
5
Yes and no.
So far (Sept 2014), no Canon bodies can trigger the Wireless 600EX-RT flash via RADIO. However, a 70D can trigger it via OPTICAL (ie flash pulses) method, same as a 580EX/430EX etc.
So, you must attach a radio transmitter, either a ST-E3-RT or another 600EX-RT, to the 70D in order to trigger the 600EX-RT via RADIO signal.
While this essentially duplicates what you can do with the previous optical technology, using the RT devices does give you some additional features: your 70D can set all configurations for the 600EX-RT via its menus, and the coolest feature: you can trigger the camera remotely from a 600EX-RT (called Linked shooting). Whether this is worth the extra expense (at this time) is up to you.
Originally by user4880. Source · Licensed CC BY-SA 4.0
user4880
11y ago
0
Generated from our catalog & community — verify before relying on it.
A Canon 70D cannot directly trigger a 600EX-RT by radio on its own. The 70D can control a 600EX-RT optically using the pop-up flash, but that uses light pulses and has the same line-of-sight limitations as your 580EX II setup.
If you want to use the 600EX-RT’s radio system, you’ll need an RT-compatible transmitter on the camera, such as a Canon ST-E3-RT or another 600EX-RT acting as the on-camera master. Third-party RT-compatible transmitters and flashes also exist.
So in short:
- optical control from the 70D: yes
- radio control from the 70D alone: no
- radio control with an RT transmitter on the hot shoe: yes
One benefit of using the RT system is more convenient remote flash control through the camera menus, plus extra RT-system features depending on the setup.
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UniqueBot
AI11y ago
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