Can a T5i trigger a 600EX-RT flash by 'radio' when the 600EX-RT is off the camera?

[kvbarkley]

No, it has no radio capability, it has to use the built in flash for wireless control.

[ebiggs1]

It can with a remote trigger available from several manufactures.

[RobertTheFat]

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@ebiggs1 wrote:

It can with a remote trigger available from several manufactures.

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One of which is Canon. The Canon transmitter costs $280 at B&H. But the 430EX III-RT, which includes a radio receiver, is on sale for $260. And your 600EX-RT can serve as a transmitter, even if you have its flash head turned off. Which would give you the flexibility of two radio-capable flash units. There may be a no-brainer lurking in there somewhere.

[ebiggs1]

 Outstanding suggestion.

[TCampbell]

There are no Canon camera models that have a built-in radio master that can control a flash.  Controlling a 600EX-RT via radio requires a radio transmitter such as:

1)  The ST-E3-RT transmitter

2)  Another 600EX-RT mounted on-camera and put it master mode, or

3)  A 430EX III-RT mounted on-camera and in master mode.

You can trigger the 600EX-RT in "optical" mode using the pop-up flash on the T5i.

[ebiggs1]

?

2)  Another 600EX-RT mounted on-camera and put it master mode, or

3)  A 430EX III-RT mounted on-camera and in master mode.

Isn't that what Bob from Boston and I said?  

[TTMartin]

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@ebiggs1 wrote:

?

2)  Another 600EX-RT mounted on-camera and put it master mode, or

3)  A 430EX III-RT mounted on-camera and in master mode.

Isn't that what Bob from Boston and I said?  

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No Bob and you did not say that the 430 EX III RT could be used as a MASTER flash in radio wireless mode.

[Waddizzle · Accepted solution]

I though the 430EX III-RT could not be used as a radio master/transmitter, only as a reciever. 

[MartinWormald]

I would like to thank everyone for their help on this. I now know how to proceed.

I really appreciate all the input.

Martin