430ex acting like a flashlight?

Discussion in 'Beyond the Basics' started by GwagDesigns, Mar 31, 2008.

  1. GwagDesigns

    GwagDesigns TPF Noob!

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    So i was on a movie set the other day shooting some stills for the production crew, using an Xti with a 430ex flash. about 3 times during the day after i had taken a shot the flash would randomly turn on, like a flashlight, basically flashing over 10 times in under a second, kinda like a over clocked strobe light. Is that some kind of phantom electrical problem or what? I cant replicate the problem, it just seems to happen sometimes.
     
  2. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    I believe the flash does that to act as a modeling light. Apparently it's activated when you press the DOF button on the camera.

    You can deactivate this feature with CF#5.
     
  3. Village Idiot

    Village Idiot No longer a newbie, moving up!

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    It might be the modeling light. The 580EX II that I own has a modeling light feature. If you hit the aperture preview button, it illuminates like described.
     
  4. doenoe

    doenoe TPF Noob!

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    just dont use it too many times in a row, cause i read somewhere that it can overheat.
     
  5. TCimages

    TCimages TPF Noob!

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    When I had an XT it seems like I used to hit the FEL button a lot that caused similar behavior. It's the asterick on the right side of the body (back).
     

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