DLF Fall Forum, 25-27 October 2004
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NISO Z39.87        (2 of 2)
§Sections
–Basic image parameters record information crucial to displaying a viewable image
–Image creation metadata records information crucial to understanding the technical environment in which a digital image file was captured
–Imaging performance assessment metadata records information that allows evaluation of the digital image’s quality, or output accuracy
–Change history metadata records information about the processes applied to an image over its life cycle
§NISO Z39.87 [revisions as of 22 October 2004]
–129 data elements
–42 Mandatory / Mandatory if Applicable
Note that in increasing number of elements, the number of mandatory elements has increased as well.  But it is important to make the distinction that some of the new elements are related to existing ones and add to flexibility of metadata recording (for example, creating a home to embed a color profile) rather than simply increasing the burden of metadata collection.