I have a file (attached) that claims to be using EXIF 0221 (2.21) - but is XMP EXIF. I don't believe XMP EXIF existed until 2.31, but I am prepared to be schooled. I researched the heck out of this before coming to the forum. Does anyone know the bottom line here?
- J
I have XMP specifications back to at least January 2004 which include the exif schema namespace. This would be somewhere around the time of Exif 2.2.1 or so, but I don't see the problem with using this schema to represent Exif of any version.
- Phil
Good to know! Any EXIF metadata for XMP spec prior to 2012 is not easy to come by. I see you point to the XMP spec itself though? Will check!
- J
Yes. The 'exif' schema was originally defined in the XMP specification. The Exif-for-XMP specification added the 'exifEX' schema.
- Phil
There is literally no resource known to me that gathers any sort of historical knowledge about metadata aside from your platform (especially your amply commented source code). I wonder if this is just a measure of software competition, topic dryness, or what. As a relative newcomer (am I?) trying to suss all this out, there is really no central repo out there better than ExifTool. I say this after reading specs and dealing with these matters for, well, several years now!
- J