Yes, that makes it even stranger. Why use an unsigned 4-byte integer when tags are mapped to a number internally. Unless they anticipate to map more than 2^8-1

Yes, that makes it even stranger. Why use an unsigned 4-byte integer when tags are mapped to a number internally. Unless they anticipate to map more than 2^8-1 or 2^16-1 different tags. Maybe I'm reading it wrong. extension_tag ue7(32) ... 'extension_tag' is the extension tag. The following values are defined: 1: EXIF data. PS. I think I understand now. It's just meant as a shortcut. Not sure why this is done when EXIF fits just as well.