You need to put the executable dcraw.exe
into the directory that contains the Magick.NET dll. The zip file ImageMagick-7.X.X-X-Q16-x86-windows.zip
that you can download from http://www.imagemagick.org/script/binary-releases.php#windows contains this file.
using (MagickImage image = new MagickImage("StillLife.CR2"))
{
image.Write("StillLife.jpg");
}
Using image As New MagickImage("StillLife.CR2")
image.Write("StillLife.jpg")
End Using