Jhead 2.6 reviewDownload
Jhead is a command line driven utility for extracting digital camera settings from the Exif format files used by many digital cameras
Jhead is a command line driven utility for extracting digital camera settings from the Exif format files used by many digital cameras. It handles the various confusing ways these can be expressed, and displays them as F-stop, shutter speed, etc.
Jhead project is also able to reduce the size of digital camera JPEGs without loss of information, by deleting integral thumbnails that digital cameras put into the Exif header. If you need to add Exif support to a program, this is a simple program to cut and paste from. Many projects, including PHP, have reused code from this utility.
Things jhead can extract from an Exif jpeg file:
Integral low-res Exif thumbnail
Camera F-stop number
Flash used (yes/no)
Distance camera was focused at
Focal length and calculate 35 mm equivalent focal length
Time and date picture was taken
Camera make and model
Things jhead can modify in an exif jpeg file:
Up-right images according to rotation tag using jpegtran
Set or relative adjust internal exif timestamps
Re-name or date stamp fils according to exif timestamp
Transfer exif headers between images
Edit jpeg comments
Delete exif or comment sections from jpeg images
What's New in This Release:
A typecast issue with GCC 4 and display of long shutter speeds with '-c' were fixed.
Auto-rotation of files with whitespace in their names was fixed.
The handling of corrupt EXIF linkages in EXIF headers was improved.
A '-a' option for renaming associated files was added.
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