ExifTool is a Perl module with an included command-line application
for reading and writing meta information in image files. It recognizes
EXIF, GPS, IPTC, XMP, JFIF, GeoTIFF, ICC Profile, Photoshop IRB and
ID3 meta information as well as the maker notes of many digital
cameras including Canon, Casio, FujiFilm, Kodak, Leaf,
Minolta/Konica-Minolta, Nikon, Olympus/Epson, Panasonic/Leica,
Pentax/Asahi, Ricoh, Sanyo and Sigma/Foveon.