plucky (3) Image::ExifTool::Pentax.3pm.gz

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 S, Optio WP, K10D, K-01 and K-5, 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, K10D and K-5!)

ACKNOWLEDGEMENTS

       Thanks to Wayne Smith, John Francis, Douglas O'Brien, Cvetan Ivanov, Jens Duttke, Dave Nicholson, Iliah
       Borg, Klaus Homeister, Louis Granboulan and Andras Salamon for help figuring out some Pentax tags, Ger
       Vermeulen and Niels Kristian Bech Jensen for contributing print conversion values for some tags, and
       everyone who helped contribute to the LensType values.

AUTHOR

       Copyright 2003-2024, Phil Harvey (philharvey66 at gmail.com)

       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)