graphics/jhead - The NetBSD Packages Collection

Program for display and manipulate data contained in the Exif header of
JPEG images from digital cameras.

Things jhead can extract from an Exif jpeg file
- Integral low-res Exif thumbnail
- Shutter speed
- Camera F-stop number
- Flash used (yes/no)
- Distance camera was focused at
- Focal length and calculate 35 mm equivalent focal length
- Image resolution
- Time and date picture was taken
- Camera make and model
- GPS info, if stored in image

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