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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 26 Jan 2017 (Thursday) 04:48
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"Flash not fired" in EXIF

 
the ­ hulk
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Jan 26, 2017 04:48 |  #1

Just wonder why I always get "Flash not fired" in Exif data every time I actually use flash.

I am using a radio trigger (Commlite brand) to fire a Profoto system.

Is it the radio trigger that does not communicates correctly to camera?

Camera 6D.




  
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Chiefy
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Jan 26, 2017 05:26 |  #2

I typically get that when I use off camera flash and a generic brand trigger such as a Pocket Wizard.


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Angmo
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Jan 26, 2017 05:29 |  #3

Nikon too. Flash not fired. I figure it's not firing an on-camera or hotshot speedlight. The camera knows a trigger is not a flash.


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John ­ from ­ PA
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Jan 26, 2017 05:51 |  #4

I think the EXIF might also indicate the presence of the return flash so that particular bit should work regardless on on camera or off camera usage. See http://www.awaresystem​s.be …rivateifd/exif/​flash.html (external link).

Values for bits 1 and 2 indicating the status of returned light.
00 = No strobe return detection function
01 = reserved
10 = Strobe return light not detected
11 = Strobe return light detected




  
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AnnieMacD
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Jan 26, 2017 16:02 |  #5

I get "Did fire" message with Profoto lights and the Profoto AirTTL for Canon on my 6D. Maybe it depends on the transmitter used?


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GregDunn
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Jan 26, 2017 16:48 |  #6

More to the point, the camera doesn't think a flash is attached unless the flash or trigger uses the camera protocol to respond when the camera tries to talk to it. If it does respond, then the camera can make some assumptions about flash control. If no response, as far as the camera is concerned, there's no compatible flash. So a TTL-capable trigger will be seen as a flash, but a single-pin trigger will not even be detected as a flash (except by the hot shoe microswitch, which serves to prevent the pop-up flash from being activated).


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"Flash not fired" in EXIF
FORUMS General Gear Talk Flash and Studio Lighting 
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