Image::ExifTool::Pentax(3pm) - phpMan

Image::ExifTool::Pentax(3pm)   User Contributed Perl Documentation   Image::ExifTool::Pentax(3pm)



NAME
       Image::ExifTool::Pentax - Pentax/Asahi maker notes tags

SYNOPSIS
       This module is loaded automatically by Image::ExifTool when required.

DESCRIPTION
       This module contains definitions required by Image::ExifTool to interpret Pentax and Asahi
       maker notes in EXIF information.

NOTES
       I couldn't find a good source for Pentax maker notes information, but I've managed to
       discover a fair bit of information by analyzing sample images downloaded from the
       internet, and through tests with my own Optio WP and K10D, and with help provided by other
       ExifTool users (see "ACKNOWLEDGEMENTS").

       The Pentax maker notes are stored in standard EXIF format, but the offsets used for some
       of their cameras are wacky.  The Optio 330 gives the offset relative to the offset of the
       tag in the directory, the Optio WP uses a base offset in the middle of nowhere, and the
       Optio 550 uses different (and totally illogical) bases for different menu entries.  Very
       weird.  (It wouldn't surprise me if Pentax can't read their own maker notes!)  Luckily,
       there are only a few entries in the maker notes which are large enough to require offsets,
       so this doesn't affect much useful information.  ExifTool attempts to make sense of this
       fiasco by making an assumption about where the information should be stored to deduce the
       correct offsets.

REFERENCES
       Image::MakerNotes::Pentax
       <http://johnst.org/sw/exiftags/> (Asahi models)
       <http://kobe1995.jp/~kaz/astro/istD.html>
       <http://www.cybercom.net/~dcoffin/dcraw/>
       (...plus lots of testing with my Optio WP and K10D!)

ACKNOWLEDGEMENTS
       Thanks to Wayne Smith, John Francis, Douglas O'Brien Cvetan Ivanov, Jens Duttke and Dave
       Nicholson for help figuring out some Pentax tags, Denis Bourez, Kazumichi Kawabata, David
       Buret, Barney Garrett and Axel Kellner for adding to the LensType list, and Ger Vermeulen
       for contributing print conversion values for some tags.

AUTHOR
       Copyright 2003-2008, Phil Harvey (phil at owl.phy.queensu.ca)

       This library is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.

SEE ALSO
       "Pentax Tags" in Image::ExifTool::TagNames, Image::ExifTool(3pm), Image::Info(3pm)



perl v5.10.0                                2008-05-30               Image::ExifTool::Pentax(3pm)

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