MediaWiki:Exif-imagedescription/qqq
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Exif is a format for storing metadata in image files. A table of Exif data is presented in Metadata section of file pages such as this one. The tags are summarized here and described in further detail in the full specification document.
This property is the description or caption of the image. It is used for the exif ImageDescription property, the dc:description property in XMP (see http://www.adobe.com/content/dam/Adobe/en/devnet/xmp/pdfs/XMPSpecificationPart1.pdf ), and the iptc-iim 2:120 caption/abstract property ( http://www.iptc.org/std/IIM/4.1/specification/IIMV4.1.pdf ).
When an image has multiple differing descriptions, mediawiki follows the MWG guidelines when deciding which to show (Which typically means Exif takes precedence).