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2011-05-20T17:43:12.533
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<blockquote> There are a lot of ways to process Exif data in backend, but they all have their problem of supporting most of the camera. </blockquote> All the camera model/vendor specific data is under <code>MakerNote</code> tag group. Furthermore the data usually is in a proprietary binary format. You're on the right tracks with <a href="http://owl.phy.queensu.ca/~phil/exiftool/" rel="nofollow">ExifTool</a>, as it currently <a href="http://owl.phy.queensu.ca/~phil/exiftool/TagNames/" rel="nofollow">supports</a> the widest variety of cameras: Canon, Casio, FujiFilm, GE, HP, JVC/Victor, Kodak, Leaf, Minolta/Konica-Minolta, Nikon, Olympus/Epson, Panasonic/Leica, Pentax/Asahi, Reconyx, Ricoh, Samsung, Sanyo, Sigma/Foveon and Sony. Another tool with wide camera support is OZHiker's <a href="http://www.ozhiker.com/electronics/pjmt/" rel="nofollow">PHP JPEG Metadata toolkit</a>, which might suit you better (having "PHP in its name). It <a href="http://ozhiker.com/electronics/pjmt/jpeg_info/makernotes.html" rel="nofollow">supports</a>: Agfa, Canon, Casio, Epson, Fujifilm, Konica/Minolta, Kyocera/Contax, Nikon, Olympus, Panasonic, Pentax/Asahi, Ricoh and Sony. (see also a <a href="http://en.wikipedia.org/wiki/Exif#MakerNote_data" rel="nofollow">brief comparison on Wikipedia</a>) I've used ExifTool a lot and can really vouch for it. It is powerful for both read and write operations; even when dealing with proprietary data. Also note that ExifTool was last updated 04/2011 — while OZHiker's tool was 01/2005.
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1. POBest way to process Exif data in backend?
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1. PTAnswer
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1. USJari Keinänen
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