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New Contributor
Posts: 4
Registered: ‎05-10-2019

Flash Not Syncing with Camera: Bad Flash or Broken Camera

I have a Canon 70D with a 430EXII flash.  From time to time, the flash with overpower the photo with a huge amount of light.  When I examine the picture in Adobe Elements, it reports that the flash didn’t fire which leads me to believe that the flash and camera were not properly connected.  Is this the fault of the flash or the shoe on the camera?  I don’t know anyone with a Canon like mine or I’d test my flash with theirs.

 

What is likely the problem?  How can I isolate the cause?


thanks.

 

WSC33

Esteemed Contributor
Posts: 4,952
Registered: ‎06-25-2014

Re: Flash Not Syncing with Camera: Bad Flash or Broken Camera


@WSC33 wrote:

I have a Canon 70D with a 430EXII flash.  From time to time, the flash with overpower the photo with a huge amount of light.  When I examine the picture in Adobe Elements, it reports that the flash didn’t fire which leads me to believe that the flash and camera were not properly connected.  Is this the fault of the flash or the shoe on the camera?  I don’t know anyone with a Canon like mine or I’d test my flash with theirs.

 

What is likely the problem?  How can I isolate the cause?


thanks.

 

WSC33


One thing that can cause that effect is the flash being set to TTL mode instead of E-TTL mode.

Bob
Philadelphia, Pennsylvania USA
New Contributor
Posts: 4
Registered: ‎05-10-2019

Re: Flash Not Syncing with Camera: Bad Flash or Broken Camera

Hey RTF,

 

Mine is set in ETTL.  In fact, I can't even find "TTL" mode.  ETTL seems to be the only one other than "M"anual.  Other thoughts?


Thanks.

Esteemed Contributor
Posts: 3,308
Registered: ‎02-17-2016

Re: Flash Not Syncing with Camera: Bad Flash or Broken Camera

Clean the hot-shoe contacts and make sure that the flash is fully seated and locked.

New Contributor
Posts: 4
Registered: ‎05-10-2019

Re: Flash Not Syncing with Camera: Bad Flash or Broken Camera

I will clean the hot-shoe, but I've reseated it in the past to see if I couldn't get it to perform properly w/o much success.  thanks though. 

Reputable Contributor
Posts: 521
Registered: ‎01-25-2018

Re: Flash Not Syncing with Camera: Bad Flash or Broken Camera

[ Edited ]

Check that the spring loaded contacts on the bottom of the flash are moving smoothly back out after you press them in, my 580EX had one sticking due to some substance many years ago causing intermittent glitches.  Also try cleaning those with a clean cloth and isopropyl alcohol and carefully do the same for the mating camera contacts.

 

Rodger

EOS 1DX M2, 1DX, 1D M2, EOS 650 (film), many lenses, XF400 video
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New Contributor
Posts: 4
Registered: ‎05-10-2019

Re: Flash Not Syncing with Camera: Bad Flash or Broken Camera

I have just done as you suggested and we'll see how it works.  It's an intermittent problem.

Valued Contributor
Posts: 455
Registered: ‎02-13-2016

Re: Flash Not Syncing with Camera: Bad Flash or Broken Camera

Is it possible that there's a setting that can be made from the camer's menus to switch the flash between TTL and E-TTL modes, or would this typically only be something that can be changed from the flash only? Or is there some other settings from the camera that might make the flash act this way?

Esteemed Contributor
Posts: 4,952
Registered: ‎06-25-2014

Re: Flash Not Syncing with Camera: Bad Flash or Broken Camera


@BurnUnit wrote:

Is it possible that there's a setting that can be made from the camer's menus to switch the flash between TTL and E-TTL modes, or would this typically only be something that can be changed from the flash only? Or is there some other settings from the camera that might make the flash act this way?


Typically, a camera will function in one of those two modes, but not in the other. The flash unit has to adapt to the camera, not the other way around.

Bob
Philadelphia, Pennsylvania USA
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