The FFMI formula taken directly from the Romano/Roberts article.
{"Image Artist": "Justin", "Image ExifOffset": "2130", "Image XPAuthor": "Justin", "Image Padding": "[]", "EXIF DateTimeOriginal": "2014:02:01 11:47:31", "EXIF DateTimeDigitized": "2014:02:01 11:47:31", "EXIF SubSecTimeOriginal": "86", "EXIF SubSecTimeDigitized": "86", "EXIF Padding": "[]"}