title: How To Find The Difference Between Two .tif Files
body: <p>The background for this problem is as follows: There is an old VB scanning application, for which I do not have the source code, that creates a .tif file out on a web-site's remote directory. ImageConvert.exe (used as part of a CGI-based web application) will convert that .tif file to a .gif file. </p>
  
  <p>A newer C# application acquires an image from a scanner, and initializes a PictureBox object with it. Eventually, the image is saved out to a share from the PictureBox object, like so:</p>
  
  <pre><code>private PictureBox m_scanned_pic = new PictureBox();
  .
  .
  .
      catch
      {
         file_exists = false;
         test_file = new FileStream(image_path, FileMode.CreateNew, FileAccess.Write);
         test_file.Close();
         test_file.Dispose();
         test_file = null;
         m_scanned_pic.Image.Save(image_path, System.Drawing.Imaging.ImageFormat.Tiff);
      }
  </code></pre>
  
  <p>When run through ImageConvert.exe, no conversion takes place, and there is no error. I want to find the differences between the .tif that ImageConvert.exe can convert and the .tif file that doesn't convert. I'm stuck. Both .tif images look fine to me visually.</p>