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Thread: How to take arbitrarily long exposures

  1. #1
    New Member
    Join Date
    Aug 2008
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    1

    How to take arbitrarily long exposures

    Are there any digital cameras being produced that have the option to keep the lense open for up to an hour [ or any length of time] to capture a subject in very low light

  2. #2
    Administrator
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    Apr 2008
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    California, USA
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    Sean

    Re: Help needed

    Nearly all digital SLR cameras have a "bulb mode", which does just that. You can take an exposure all the way until the camera battery runs out, if such a long exposure is needed. Even then, you could use a battery pack to extend the potential exposure time to twice as long.

    The only disadvantage is that longer exposures have an increased tendency for fixed pattern noise.

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