Image::ExifTool::Pentax(3pm)

1Image::ExifTool::PentaxU(s3e)r Contributed Perl DocumentaItmiaogne::ExifTool::Pentax(3)
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NAME

6       Image::ExifTool::Pentax - Pentax/Asahi maker notes tags
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SYNOPSIS

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

12       This module contains definitions required by Image::ExifTool to inter‐
13       pret Pentax and Asahi maker notes in EXIF information.
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NOTES

16       I couldn't find a good source for Pentax maker notes information, but
17       I've managed to discover a fair bit of information by analyzing sample
18       pictures from the Optio 330, Optio 550, Optio S, *istD, *istDs, and
19       through tests with my own Optio WP, and with help provided by other
20       ExifTool users (see ACKNOWLEDGEMENTS).
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22       The Pentax maker notes are stored in standard EXIF format, but the off‐
23       sets used for some of their cameras are wacky.  The Optio 330 gives the
24       offset relative to the offset of the tag in the directory, the Optio WP
25       uses a base offset in the middle of nowhere, and the Optio 550 uses
26       different (and totally illogical) bases for different menu entries.
27       Very weird.  (It wouldn't surprise me if Pentax can't read their own
28       maker notes!)  Luckily, there are only a few entries in the maker notes
29       which are large enough to require offsets, so this doesn't affect much
30       useful information.  ExifTool attempts to make sense of this fiasco by
31       making an assumption about where the information should be stored to
32       deduce the correct offsets.
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REFERENCES

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

42       Thanks to Wayne Smith, John Francis, Douglas O'Brien Cvetan Ivanov and
43       Jens Duttke for help figuring out some Pentax tags, Denis Bourez, Kazu‐
44       michi Kawabata, David Buret, Barney Garrett and Axel Kellner for adding
45       to the LensType list, and Ger Vermeulen for contributing print conver‐
46       sion values for some tags.
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AUTHOR

49       Copyright 2003-2007, Phil Harvey (phil at owl.phy.queensu.ca)
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51       This library is free software; you can redistribute it and/or modify it
52       under the same terms as Perl itself.
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