Canon 600ex RT error

[Zienphotography]

Hello,

We have a problem with the Canon 600 ex RT. The flash will go off at maximum power on 1/128 and 1/1.
We have tried serveral options but we can't solve it.

camera

5D mii
5D mii
6D

lens 

16-35 2..8 + 4.0

We've got this problem with other flashes too. Doe you know what is the problem? Is it a regular problem?

Thank you in advance

ZIEN24

[Waddizzle]

Which camera? 

[diverhank]

Does the flash only output full power at 1/28 (odd number, shouldn't it be 1/32?) and no other (like 1/128 or 1/64)?  If it produces nothing but full power for all settings, you have a big problem - a failure in circuitry that needs repair.  This problem, while not prevalent, has been known to happen.

[kvbarkley]

Certainly not a problem at 1/1. How are you triggering? Are you using any non-Canon equipment?

[Zienphotography]

just camera and flash. Keeps giving full power

[kvbarkley]

Which Camera?

Is it on camera or controlled remotely via optical or wireless? Have you tried to reset the settings? Are you in manual mode?

[Zienphotography]

camera is in the message

trough the viewer no live view 

did reset it  manuel mode

[kvbarkley]

Is the flash on the camera?

If the flash is in manual mode, and you cannot set the power, the flash is broken. If you are in a hurry call Canon, otherwise, buy Syl Arena's Speediliter's handbook.

[RobertTheFat]

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@Zienphotography wrote:

Hello,

We have a problem with the Canon 600 ex RT. The flash will go off at maximum power on 1/128 and 1/1.
We have tried serveral options but we can't solve it.

camera

5D mii
5D mii
6D

lens 

16-35 2..8 + 4.0

We've got this problem with other flashes too. Doe you know what is the problem? Is it a regular problem?

Thank you in advance

ZIEN24

---

Those are E-TTL cameras. So unless you are going to set the flash power manually, the flash must be set to E-TTL as well. If you set it to TTL instead, it will always flash at full power.