- output the properties contained in a JPEG Exif section
] [ -s delim
] [ file
utility parses file
or, by default, its standard
input, looking for a JPEG APP1 section containing Exif (Exchangeable Image
File) data. The properties contained in these data are then printed to the
Digital cameras typically add Exif data to the image files they produce,
containing information about the camera and digitized image. The options
described below may be used to control output verbosity and section
- Output camera-specific, image-specific, and verbose
properties contained in the file.
- Output camera-specific properties contained in the
- Output Exif parse debug information.
- Output image-specific properties contained in the
- Make lens characteristics image-specific. Useful for
higher-end cameras that have removable lenses (i.e., not
- Suppress output of a property section header.
- Separate field name and value with the string delim.
The default is ': '.
- Output unknown or unsupported properties contained in the
file. Also, output invalid properties when debugging information is
- Output verbose properties contained in the file.
Some camera manufacturers include a "maker note" section with
additional information about the camera or image not part of the Exif
standard. The format of these maker notes varies wildly and manufacturers are
not forthcoming with implementation details. Therefore, exiftags
note support is the result of experimentation and reverse engineering (see
below for credits) and incomplete. exiftags
is known to have at least
partial support for the following manufacturers' maker notes:
If you wish support for additional manufacturers or cameras, please send any
information you have about the data format or, better yet, patches, and a
sample image file to the author. (Though he makes no promises.)
utility exits 0 on success, and >0 if an error occurs.
utility was developed using the 2003 draft Exif standard,
version 2.21 (http://tsc.jeita.or.jp/) and the June 1992 TIFF specification,
revision 6.0 (http://partners.adobe.com/asn/developer/pdfs/tn/TIFF6.pdf).
Not all Exif 2.21 properties are supported, due either to the author's laziness
or incomplete information. Maker note support is spotty due to lack of
utility and this man page were written by Eric M. Johnston
<email@example.com>. Portions of the utility were developed while
referencing the public domain Jhead utility, version 1.2, by Matthias Wandel
<firstname.lastname@example.org>. Some maker note support is the result of TsuruZoh
(http://www.ba.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html) and its
contributers. Minolta maker note support was contributed by Javier Crespo
<email@example.com>. Panasonic maker note support was contributed by
Tom Hughes <firstname.lastname@example.org>.
Special thanks to the following folks for submitting sample camera files:
Bradley Bailey, Kirk Bauer, Marcy Brown, Frank Fortunato, Per Kristian Hove,
Brian Jackson, Stan Jirman, Kaye Kirsch, Meder Kydyraliev, Kevin Layer, Henrik
Levkowetz, Jamie Mayberry, Jason Montojo, Nick Reid, Frank Reiff, Christian
Schmid, Michael Shostak, Nathan Treadway, Mathieu Vanasse, Mark Westling,
Phillip Wherry, and Christian Zuckschwerdt.