New Post: Get Only Diff

using (MagickImage image1 = new MagickImage(@"D:\test\image1.png"))
{
  using (MagickImage image2 = new MagickImage(@"D:\test\image2.png"))
  {
    image1.Composite(image2, CompositeOperator.Difference); // this is now diff.png

    image1.Alpha(AlphaOption.Copy);

    image1.Write("@D:\test\result.png");
  }
}