dark photos at distances

Discussion in 'Digital Cameras' started by John Ziemba, May 2, 2004.

  1. John  Ziemba

    John Ziemba Guest

    Can anyone explain why all my photos turn out very dark when I use a flash.
    Up Close it works fine, just when I`m back a little such as my kids
    performing on a stage. I see others taking pictures with a flash and they
    are turning out fine. Could it be my camera ? I have an HP 735.

    Thanks
     
    John Ziemba, May 2, 2004
    #1
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  2. John  Ziemba

    John Ziemba Guest

    I Think your right. Can I add a flash to this camera some how ?
     
    John Ziemba, May 2, 2004
    #2
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  3. John  Ziemba

    Ron Andrews Guest

    The basic problem is the inverse square law that governs all radiation
    including light. Since the light spreads out as it travels, it gets dimmer.
    Mathematically speaking the intensity falls off with the inverse of the
    square of the distance. In non-technical terms, the light from the flash
    gets dimmer in a hurry as it gets farther away.
    In an auditorium where everything is far away, you need a powerful
    flash or a more sensitive image sensor or a wider aperture. If your camera
    doesn't accept auxiliary flashes, you can use a flash with a slave sync. It
    will fire when it senses the flash on camera (or the flash from some other
    camera).
    If there are close objects in the image, then they will dominate the
    exposure. The reflected light from near objects will cut off the flash. The
    background of a scene like this is always dark. there is no way to get even
    illumination for near and distant objects from a single flash. A more
    powerful flash wont help here. The solutions are to use multiple flashes in
    different positions or fix it up on Photoshop after the fact.
     
    Ron Andrews, May 3, 2004
    #3
  4. John  Ziemba

    Cool Hand Guest

    =>I Think your right. Can I add a flash to this camera some how ?
    =>

    You can add a slave flash(been there and done that), but IMHO, it is not much
    useful in your situation.

    If indoor and low light shooting is important to you, get a better DC with
    strong flash such as Fuji S7000(27ft flash distance) or Fuji A310(19ft) is a
    better solution. Another solution is to use your old P&S film camera for this
    kind of situation. Strange, average P&S film cameras have strong enough flash
    for this purpose.
     
    Cool Hand, May 3, 2004
    #4
  5. John  Ziemba

    Don Stauffer Guest

    The light is spreading out, and getting weaker the further from the
    camera/flash unit it gets. For every doubling of distance from the
    flash, the illumination decreases by a factor of four. So flash is
    really only effective for shooting reasonably close objects or peoples.
    You can get a stronger flash to extend the range a bit. But a flash is
    never going to allow you to light up landscapes at night.
     
    Don Stauffer, May 3, 2004
    #5
  6. John  Ziemba

    B.A.S. Guest

    Others here have already given some good advice re: flash and distance.

    Just wanted to say I always get a kick out of seeing thousands of
    flashes firing from the stadium stands during night football games, rock
    concerts, etc. At least with digital cameras, hundreds of rolls of films
    aren't going to waste anymore ;). (Though with digicams, you would think
    people would immediately realize there's no point in trying flash photos
    from such distances. Suppose they might get some sort of image just from
    ambient light, and the flashes on P&S's are firing regardless, so most
    folks never even realize the futility...).
     
    B.A.S., May 3, 2004
    #6
  7. John  Ziemba

    John Ziemba Guest

    Thanks for the info guys. I will try some of your suggestions.

    JZ
     
    John Ziemba, May 3, 2004
    #7
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