Exposure Compensation with Flash

Discussion in 'UK Photography' started by David Balfour, Feb 23, 2005.

  1. Hi all,

    I can't get my head round what I need to do here, please can somebody
    confirm I have this the right way round.

    Say I'm taking a photo of somebody in a dark room with flash (external). My
    Olympus OM-2 (full frame average metering, OTF flash metering) will fire too
    much flash by default, so I need to underexpose the frame.

    I would therefore turn the exposure compensation dial towards the minus
    numbers? This would help in reducing the overexposure of the person, because
    the camera will shut the flash off earlier?

    Have I got that right?


    David Balfour, Feb 23, 2005
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  2. David Balfour

    Mark Dunn Guest

    If you mean the compensation dial on the camera, I don't think so. I think
    you need to set the ISO on the flash higher, so it thinks you're using
    faster film.
    Mark Dunn, Feb 25, 2005
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  3. Not sure about the OM-2, but on some cameras (eg. Contax 139), the
    compensation dial is directly connected to the film speed dial, so doing
    either would have the same effect
    Willy Eckerslyke, Feb 25, 2005
  4. Yes, the OM-2 is like this. The flash is fully automatic, so the camera ISO
    speed effectively needs to be adjusted. Just wasn't quite sure I had it in
    right direction - although once I'd typed it all out it seemed to make a lot
    more sense!

    Thanks for your input,

    David Balfour, Feb 25, 2005
  5. David Balfour

    Peter Guest

    There is no ISO setting on the flash as thiss is controlled by the camera
    with TTL OTF metering so yes set the compo on the control on the camera.

    Peter, Feb 26, 2005
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