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Jhead

'Jhead' extracts digital camera settings from Exif format files. It handles the various ways these can be expressed, and displays them as F-stop, shutter speed, etc. It also reduces the size of JPEGs without loss of information by deleting integral thumbnails that cameras put into the Exif header.

It extracts an integral low-res Exif thumbnail, shutter speed, F-stop number, Flash used (yes/no), Focus distance (not all digital cameras store this element), focal length (most zoom cameras store their zoomed-to focal length), equivalent 35mm focal length (calculated from focal length, CCD size, and CCD resolution), image resolution, time and date of picture, and camera make and model.

Last updated 7 Jul, 2005


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Leadership
Related Projects

Exiftags, exifprobe, jpgind, libexif, libgphoto

Versions

2.4

2.4 stable released 2005-07-07

User Community and Support

User guide available in HTML format from http://www.sentex.net/~mwandel/jhead/usage.html

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Please send comments on these web pages to bug-directory@fsf.org, send other questions to info@fsf.org.

Copyright © 2000 - 2008 Free Software Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301, USA

The copyright licensing notice below applies to this text. Any software described in this text has its own copyright notice and license, which can usually be found in the distribution itself.

Permission is granted to copy, distribute, and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts.