 <p>You have discovered a bug in Magick.NET. Your image contains invalid sizes that where not correctly checked. This will be fixed in Magick.NET 6.8.9.401.</p> <p>As also pointed out in the comments you can also report problems / ask questions here: <a href="https://magick.codeplex.com/discussions" rel="nofollow">https://magick.codeplex.com/discussions</a>. I will reply to all questions asked there.</p> <p>With a build that includes a fix for this problem I was able to extract the following values:</p> <pre><code>XResolution: 1 YResolution: 1 ResolutionUnit: 1 Artist: Phil Harvey YCbCrPositioning: 1 Copyright: 2011 Phil Harvey </code></pre>