ExifTool

http://owl.phy.queensu.ca/~phil/exiftool/

Notes

Composite tags

http://owl.phy.queensu.ca/~phil/exiftool/TagNames/Composite.html


CC0 / Public domain dedication To the extent possible under law, d3vid seaward has waived all copyright and related or neighboring rights to "ExifTool in Grasmere notebook, including code snippets" (why? how?)