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+Program for extracting Digicam setting information from Exif Jpeg headers
+used by most Digital Cameras.
+Things the 'jhead' program can extract from an Exif file:
+ - Integral low-res Exif thumbnail
+ - Shutter speed
+ - Camera F-stop number
+ - Flash used (yes/no)
+ - Focus distance (some digital cameras store this element - very
+ interesting)
+ - 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 picture was taken
+ - Camera make and model