Digital Photo Cameras use the Exif metadata standard to store image metinformation (geotag, image properties, timestamp) in the (JPG, TIFF) image.

• EXIF = Exchangeable image file format
• http://www.exif.org/
• http://www.iptc.org/
• flickr: exif and filename mass-manipulation software

• http://www.controlledvocabulary.com/imagedatabases/programs.html
• http://www.stuffware.co.uk/cheese/
• Image Info Toolkit → http://www.picturefinder.com/software/iit/welcome.html

• Perl library → Image:Exiftool
• Binary → exiftool
• http://en.wikipedia.org/wiki/ExifTool
• http://www.sno.phy.queensu.ca/~phil/exiftool/
• http://www.sno.phy.queensu.ca/~phil/exiftool/ExifTool.html