Image::MetaData::JPEG::MakerNotes(3pm) on Linux
The text 7fd49837ff04, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy) shipped it.
This document contains random information and details on MakerNotes; it is an appendix to the main manual page of the Image::MetaData::JPEG module, which the reader should refer to for further details and the general scope. The note on MakerNote parsing in the main manual page is of particular interest.