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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 13 Sep 2019 (Friday) 09:28
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Canon 6D and Flash question

 
anitaw2
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Sep 13, 2019 09:28 |  #1

When I use my flash on my camera (TTL mode), for some odd reason, the shutter clicks twice. is this supposed to happen and why??


Anita W.

  
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Lotto
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Sep 13, 2019 15:01 |  #2

The shutter clicks twice, so the camera actually capture two frames for every press of the button?


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Left ­ Handed ­ Brisket
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Sep 13, 2019 15:15 |  #3

Yeah, need more details.


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Sep 13, 2019 21:32 |  #4

Pre-flash?


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Wilt
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Post edited over 4 years ago by Wilt.
     
Sep 14, 2019 01:23 |  #5

a) The shutter 'clicks' twice? or b) The Flash emits two bursts of light?!


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John ­ from ­ PA
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Post edited over 4 years ago by John from PA.
     
Sep 15, 2019 06:31 |  #6

anitaw2 wrote in post #18926114 (external link)
When I use my flash on my camera (TTL mode), for some odd reason, the shutter clicks twice. is this supposed to happen and why??

Is this the used 6D “MkI” that you bought back in August? https://photography-on-the.net …showthread.php?​p=18913556

I always recommend that when you buy a used camera you get the manual (available as PDF on line) and then go into the menu and change back to the factory default settings. Also clear any custom functions. This will ensure that the camera moving forward will behave as the manual describes. Then as you make your "custom" changes to suit your style, take notes.

The manuals are located at https://www.usa.canon.​com …s/dslr/eos-6d?tab=manuals (external link)




  
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anitaw2
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Sep 16, 2019 08:59 |  #7

John from PA wrote in post #18927104 (external link)
Is this the used 6D “MkI” that you bought back in August? https://photography-on-the.net …showthread.php?​p=18913556

I always recommend that when you buy a used camera you get the manual (available as PDF on line) and then go into the menu and change back to the factory default settings. Also clear any custom functions. This will ensure that the camera moving forward will behave as the manual describes. Then as you make your "custom" changes to suit your style, take notes.

The manuals are located at https://www.usa.canon.​com …s/dslr/eos-6d?tab=manuals (external link)

I did all that. There is just a little note saying that when using the flash in live view, the shutter will click twice, but doesn't explain why. The camera (6D mark I) is awesome by the way! I'm so glad I got it.


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Left ­ Handed ­ Brisket
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Post edited over 4 years ago by Left Handed Brisket.
     
Sep 16, 2019 09:23 |  #8

anitaw2 wrote in post #18927727 (external link)
flash in live view

Lately I'm battling total lack of providing details with my twin sons, so don't take my comments too personally.

:D

There are so many variables in photography that your OP is practically useless to anyone trying to lend a hand. In live view the shutter is open so you can see the image being projected on the camera sensor. The flash timing is dependent on the shutter, so the shutter must close before reopening to properly time/fire the flash. So, yes in live view it is supposed to happen.

Even in your second post the inclusion of "live view shooting" is kind of an aside and you seem to ignore calls for more details when in reality that detail is the key to the problem. Actually, who knows if it is even a problem or you were just asking out of curiosity? Details matter, help us help you.

Signed,
Tired Dad


PSA: The above post may contain sarcasm, reply at your own risk | Not in gear database: Auto Sears 50mm 2.0 / 3x CL-360, Nikon SB-28, SunPak auto 322 D, Minolta 20

  
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anitaw2
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Sep 17, 2019 07:29 |  #9

Left Handed Brisket wrote in post #18927740 (external link)
Lately I'm battling total lack of providing details with my twin sons, so don't take my comments too personally.

:D

There are so many variables in photography that your OP is practically useless to anyone trying to lend a hand. In live view the shutter is open so you can see the image being projected on the camera sensor. The flash timing is dependent on the shutter, so the shutter must close before reopening to properly time/fire the flash. So, yes in live view it is supposed to happen.

Even in your second post the inclusion of "live view shooting" is kind of an aside and you seem to ignore calls for more details when in reality that detail is the key to the problem. Actually, who knows if it is even a problem or you were just asking out of curiosity? Details matter, help us help you.

Signed,
Tired Dad

I apologize, sorry about not being clear.


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Oceanripple**
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Sep 18, 2019 12:22 |  #10

Hi, Yes you will get two clicks (& more) with ETTL & Liveview from Canon and most other DSLRs.

Liveview requires the mirror up. ETTL (briefly) requires the mirror down. The capture requires the mirror up again. Then everything re-sets.

More info (Nikon slanted) here:
https://www.dpreview.c​om/forums/thread/39521​58 (external link)

& 7D here:
https://www.youtube.co​m/watch?v=hN4SfVxWAzA (external link)




  
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anitaw2
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Sep 18, 2019 13:53 |  #11

Oceanripple** wrote in post #18928995 (external link)
Hi, Yes you will get two clicks (& more) with ETTL & Liveview from Canon and most other DSLRs.

Liveview requires the mirror up. ETTL (briefly) requires the mirror down. The capture requires the mirror up again. Then everything re-sets.

More info (Nikon slanted) here:
https://www.dpreview.c​om/forums/thread/39521​58 (external link)

& 7D here:
https://www.youtube.co​m/watch?v=hN4SfVxWAzA (external link)

That makes perfect sense. thanks for the info


Anita W.

  
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Canon 6D and Flash question
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