Dust on sensor

Discussion in 'Digital SLR' started by Lars Ritterhoff, Jan 5, 2005.

  1. Lars Ritterhoff

    Will D. Guest

    Okay, food for thought, thanks.
    Interesting observation. The site seems to want to give the impression
    of representing authoritative knowledge. I watched the video clips, and
    was rather unimpressed; they were singularly lacking in production
    value, one could not see what was being done, only that something was
    going on. Three versions of blowing air on the brushes: amazing!!

    Maybe I've been hanging around geeks too much, but the entire business
    seemed lacking in anything substantial.. :)
    Don't know either, Andrew. Anyway, the consensus seems that powering
    down doesn't make any difference, though perhaps long exposures might.


    Will D.
    Will D., Jan 9, 2005
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  2. I'm told by an acquaintance who claims lots of use of a 10D,
    By definition, if you are holding the camera with the opening down, you
    are holding the lens with the rear element UP. Thus the dust you avoided
    falling into the camera falls onto the lens, with the same net result that
    it's sloshing around inside the camera.

    Not that I think it makes a compelling difference anyway (the sensor will
    eventually get dirty and need to be cleaned), but the best way to avoid
    dust settling would be to have the opening/lens parallel to the ground.

    Kevin_Stevens, Mar 2, 2005
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  3. Lars Ritterhoff

    DoN. Nichols Guest

    Hmm ... that would at least reduce the electrostatic charge on
    the sensor, so it would reduce the attraction of the dust to the sensor.

    Hmm ... I wonder whether one of those Zero-stat guns for
    eliminating surface charge on vinyl records would be a good
    pre-treatment for the sensor before gentle puffing or vacuuming.
    perhaps if you hold the rear cap just beside the lens mount, you
    can transfer the lens into the cap quickly enough to minimize this dust.
    If the sensor is not charged and actively attracting dust, yes.

    DoN. Nichols, Mar 3, 2005
  4. Not the same net result. Dust on the lens is not in the focal plane, so
    will not show up as an object on the image. Anyway, dust on a lens is
    unavoidable, but easily dealt with.

    Merritt Mullen, Mar 5, 2005
  5. Lars Ritterhoff

    Alan Browne Guest

    Dust on the lens will show as flare if you shoot into the light.
    Alan Browne, Mar 5, 2005
  6. Lars Ritterhoff

    DoN. Nichols Guest

    DoN. Nichols, Mar 5, 2005
  7. Lars Ritterhoff

    Sheldon Guest

    By definition, if you are holding the camera with the opening down, you
    But, it's a hell of a lot easier to clean the rear element of the lens than
    it is to clean the sensor, assuming all these gravity theories play out. If
    gravity was "really" our friend it would keep the dust on the ground where
    it belongs.
    Sheldon, May 13, 2005
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