Flash slave & digital flash

Discussion in 'UK Photography' started by boothmarcus, Nov 7, 2008.

  1. boothmarcus

    boothmarcus Guest

    Hi

    Can anyone explain why when i have a flash attached to a slave unit,
    it will not work with a digital camera and its own flash.

    The cameras flash triggers the slave unit & the flash is set off, but
    the picture does not show the secondry flash, only the dedicated one
    on the digital camera.

    Any help much appreciated.

    Marcus
     
    boothmarcus, Nov 7, 2008
    #1
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  2. I had exactly the same problem with the Nikon D70 & SB600 (haven't tried
    it with the D80). My notes tell me that the solution was to set the
    camera to A - Aperture Priority, when the flash becomes back curtain
    synch'd. ISTR that worked fine.
     
    Willy Eckerslyke, Nov 7, 2008
    #2
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  3. boothmarcus

    Woody Guest



    Most cameras actually do a double flash, first for metering, second for
    taking. Could be that the slave is going off on the first flash and has
    finished before the second - they are after all very short.
     
    Woody, Nov 7, 2008
    #3
  4. boothmarcus

    OG Guest

    Does your camera use a pre-flash for exposure calculation? Mine does, so
    I've had to buy a separate flash to mount on the camera so that I can use
    the slave.

    I'm told that some slave units allows you to ignore the pre-flash.
     
    OG, Nov 7, 2008
    #4
  5. Good point. Just had another look at my notes and realised that when I
    solved this I'd had the flash set to M (1/64 power) to stop the
    pre-flash from triggering the slave units.
     
    Willy Eckerslyke, Nov 10, 2008
    #5
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