"This document is designed to familiarise photographers, photo editors and metadata managers with the use of the IPTC Photo Metadata. It provides a short guideline on the use and semantics of each IPTC field (also called metadata property)."
"This standard specifies the formats to be used for images, sound, and tags in digital still cameras and in other systems handling image and sound files recorded by digital still cameras."
"This standard defines a set of metadata elements for raster digital images to enable users to develop, exchange, and interpret digital image files. The dictionary has been designed to facilitate interoperability between systems, services, and software as well as to support the longterm management of and continuing access to digital image collections."