Image::ExifTool::WriteCanonRaw(3) User Contributed Perl Documentation Image::ExifTool::WriteCanonRaw(3)

# [NAME](#NAME)

Image::ExifTool::WriteCanonRaw.pl - Write Canon RAW (CRW and CR2) information

# [SYNOPSIS](#SYNOPSIS)

These routines are autoloaded by Image::ExifTool::CanonRaw.

# [DESCRIPTION](#DESCRIPTION)

This file contains routines used by ExifTool to write Canon CRW and CR2 files and metadata.

# [NOTES](#NOTES)

The CRW format is a pleasure to work with. All pointer offsets are relative to the start of the data for each directory. If EXIF/TIFF had implemented pointers in this way, it would be MUCH easier to read and write TIFF and JPEG files, and would lead to far fewer problems with corrupted metadata.

# [AUTHOR](#AUTHOR)

Copyright 2003-2026, 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](#SEE_ALSO)

[**Image::ExifTool::CanonRaw**(3pm)](/man/os/exiftool/Image::ExifTool::CanonRaw.3pm), [**Image::ExifTool**(3pm)](/man/os/exiftool/Image::ExifTool.3pm), <https://exiftool.org/canon\_raw.html>

2026-10-28 perl v5.44.0

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Document: Image::ExifTool::WriteCanonRaw(3pm) from exiftool 13.60-r0 (Chainguard OS)
Source: https://github.com/exiftool/exiftool