Exif Jpeg header manipulation toolThings jhead can extract from an Exif jpeg file Time and date picture was taken Camera make and model 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 GPS info, if stored in image IPTC header XMP data Things jhead can modify in an exif jpeg file Up-right im
