D200 banding--mine's fixed + way to check for long banding

Discussion in 'Digital SLR' started by Toby, Mar 19, 2006.

  1. Toby

    Toby Guest

    Hi all,

    My early D200 exhibited "long" banding (corduroy striping) along the bottom
    and top 1/4 of the frame. It returned from Nikon yesterday perfect (after
    having had "tiny" (their words--in Japanese)) parts replaced. So I conclude
    that they have solved this problem, and can unhesitatingly recommend the
    camera to those interested, at least insofar as the banding issue goes.

    I ran across a way to view this banding very clearly in looking at some of
    my older images--purely by accident. I happen to have ACDSee 6.0 installed.
    I opened one of my jpgs (it opened to a default 20 % size in the editor).
    This particular image was extremely underexposed--almost completely
    black--in large part because of bright light sources, but any very
    underexposed image would do. I then went into the editor and raised the
    gamma and increased the contrast. To my surprise, the banding became quite
    prominent--very easily visible even at 20% in the areas of the image where I
    knew there to be banding problems from painstaking review of many images.
    The banding pattern was consistent from frame to frame, and was entirely
    absent on images made after the repair.

    Interestingly, doing the same routine in PS does not bring up the banding--I
    think there is a different algorithm at work for interpolating pixels for
    the size on screen. Since the bands were much wider than they actually are,
    I assume that ACDSee interpolates the pixels in such a way that several
    bands are "clumped" together, and a regular interference pattern of clumps
    of dark bands and light bands are displayed at 20% magnification. I have not
    checked whether larger or smaller magnifications exhibit this effect, but it
    is quite clear at 20%.

    Just thought those of you with D200s who are worried about this might find
    this information of use.

    Toby, Mar 19, 2006
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  2. Was this a Japanese or a USA version D200? I'm glad it's fixed.

    Rita Ä Berkowitz, Mar 19, 2006
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  3. Toby

    Toby Guest

    Bought in Tokyo in January.

    Toby, Mar 19, 2006
  4. Thanks. I'm just trying to determine if there is a pattern here. I wonder
    if there are any USA versions of the D200 afflicted with "banding" problems?

    Rita Ä Berkowitz, Mar 19, 2006
  5. Toby

    Toby Guest

    If one reads any of the many banding threads on the net, it would seem that
    all markets that had early production models for sale had some with banding

    Toby, Mar 20, 2006
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