Have ExifTool Display Maker Notes
Phil Harvey’s ExifTool is a fantastic software tool for displaying and interacting with image Exif data, however by default it doesn’t display maker notes and I always forget the command line options to persuade it to list them, so here it is – the -u option gets exiftool to display ‘unknown’ tags and theses include maker notes!
exiftool -u image.jpg
The makernotes will be listed as unknown items by their hex ids.
Happy days – Thanks Phil!

.