Spot on Nikon D100 pictures

Discussion in 'Nikon' started by rfdjr, Oct 14, 2003.

  1. rfdjr

    rfdjr Guest

    I just got around to downloading some pictures I took the past few days,
    and also over the summer, from my 4 month old D100. I noticed a small
    dark blotch in the same place on all the photos. Would this be a defect
    in the sensor, or possiboy dirt that got in there? I'm very careful with
    the camera, keeping the lens cap on and in the case. What can I do about
    it? Thanks.
    rfdjr, Oct 14, 2003
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  2. Dirt on the sensor is most likely, a hot or dead pixel is also possible. I'd
    recommend cleaning the sensor (using D100 specific techinques -- look it up
    and follow the instructions *carefully*). Use a blower first (definitely not
    compressed air--a hand blower) then clean the sensor it that doesn't work,
    then check for hot pixels if cleaning doesn't work.

    Howard McCollister, Oct 14, 2003
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  3. rfdjr

    Bryan Guest

    It may be dust you can not even see. I clean my d100 with pec pads and a
    modified spatula thingy. There is a tutorial on how to make one on pbase. I
    had the same problem, cleaned it and now its fine. Need to clean it every
    month or so though.
    Bryan, Oct 14, 2003
  4. rfdjr

    ASH Guest

    You have said it's a blotch. If that is the case, rather than a speck, it's
    more likely to be on the lens. Also, does it have sharp edges, if not,
    again, it'll be the lens. If there's any appreciable size to it, I'm not
    sure how it got onto the sensor, you ought to be able to see it.
    Sounds obvious, but take the lens off and take a shot of a white card and
    see if you still get it.
    ASH, Oct 14, 2003
  5. Blotch, speck, whatever. The sensor is charged, and has a tendency to
    attract dust particles of various sizes. Just the act of changing a lens can
    do this and virtually all dSLRs where the sensor is occasionally open to the
    air (lens changing) will get dust on the sensor occasionally that is
    visible. The place to start is blow it off with a hand blower, see if that
    helps. Then, if that doesn't work clean the sensor (BE CAREFUL and READ
    about it first- - kind of hard to do in a D100).\

    Howard McCollister, Oct 14, 2003
  6. If you're happy with the photos that your current digital camera takes, then
    your reasoning is sound. dSLRs have some drawbacks to them by comparison to
    consumer point-and-shoots, but for those pros or amateurs who don't want to
    compromise on the quality of their images, and whose skill and knowledge
    allows them to utilize the advantages such a high quality camera/lens can
    provide -- dirt on the sensor is a small price to pay.

    Howard McCollister, Oct 14, 2003
  7. rfdjr

    Nikki Guest

    If you want to determine what this spot is, simply stop your lens down
    to f/22 and take a shot of the sky or any uniform surface; the speck
    on the CCD will be rendered relatively sharp, and you'll probably see
    a bunch of others you didn't even know about. I've usually had good
    luck by just blowing it off with an ear syringe, but stubborn specks
    that have been on there a while may require on of these special wands
    that you see for sale for this purpose.

    Oh, and a caution about using digital cameras with bellows
    attachments--these are the #1 way to get your CCD filthy as hell. Be
    sure to vacuum or blow the interior of the bellows thoroughly before
    use, don't make the mistake I did...
    Nikki, Oct 15, 2003
  8. rfdjr

    Mike Engles Guest


    I hope in a DSLR the sensor is behind a shutter curtain like film.
    If it is always in view, how can you have different shutter speeds?

    Perhaps I am being ignorant.

    Mike Engles
    Mike Engles, Oct 18, 2003
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