Scanning artifacts

From: D. R. Fowler (rees@GWI.NET)
Date: Thu May 18 2000 - 02:51:55 CDT

  • Next message: D. R. Fowler: "Scanning artifact question withdrawn." 

    Message-Id: <200005180753.AAA13748@dns.ccit.arizona.edu>
Date:         Thu, 18 May 2000 03:51:55 -0400
From: "D. R. Fowler" <mailto:rees@GWI.NET>
Subject:      Scanning artifacts
To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU

    <pre> Dear Imagelibbers,

    Some scans of engravings seems to have a diffraction grating-like effect. Note the reddish and greenish colored areas on the buildings in the image at (file =
    ~250 KB)

    <http://www.bibliographics.com/AMMAN/LS-1.htm>

    Is this a scanner or a scanning artifact? Or is it a sign that my scanner is about to give up the ghost? If not -
         what am I doing wrong?
         what can I do to prevent this, other than scanning as grayscale image?

    Many thanks, D. Fowler

    </pre>

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