View source for Exif

The '''Exchangeable image file format''' (Exif) is an image [[file format]] which adds lots of [[metadata]] to existing image formats, mainly [[JPEG]].

To read the Date/Time tag do:
  exif --tag=0x132 filename.jpg       (reveals Date & Tag) 
  exif --tag=0x9003 filename.jpg      (reveals Date and Time (original))
  exif --tag=0x9004 filename.jpg      (reveals Date and Time (digitized))

To set the Date/Time tag:
  exif  --tag=0x132 --set-value="1975:01:01 12:01:01" --ifd=0 filename.jpg

For tools that extract Exif meta data look here - [[Document_Metadata_Extraction#Images]]



== External Links ==

* [http://exif.org/ exif.org]
* [[Media:Exif2-2.pdf|Exif 2.2 specification]]
* [http://en.wikipedia.org/wiki/Exif Exif] article in the Wikipedia.