Please see: http://www.barrypearson.co.uk/articles/dng/specification.htm#areas [link]
Using dng_validate or an EXIF metadata viewer should be able to tell you the resolutions of the various areas in your DNG file.
<code>
<blockcode>
<c>
<cpp>
<drupal5>
<drupal6>
<java>
<javascript>
<php>
<python>
<ruby>
<foo>
[foo]
More information about formatting options
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Copyright © 2008-2012 LibRaw LLC
Please see:
http://www.barrypearson.co.uk/articles/dng/specification.htm#areas
Using dng_validate or an EXIF metadata viewer should be able to tell you the resolutions of the various areas in your DNG file.