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'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.
DocumentationUser guide available in HTML format from http://www.sentex.net/~mwandel/jhead/usage.html
released on 7 July 2005
|License||Verified by||Verified on||Notes|
|PublicDomain||Janet Casey||29 August 2002|
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This entry (in part or in whole) was last reviewed on 7 July 2005.