# canon_cr3: mapping Canon CR3 camera files

> canon_cr3 maps Canon camera image files, especially the CR3 container and its CRX image structures. Its format notes describe tracks, custom tags, metadata and compression, while a Python parser inspects CR3 and CR2 files and extracts selected image parts. Separate notes describe Canon HEIF images.

- Type: Case study
- Targets: Firmware
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-09
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/lclevy/canon_cr3>
- Primary source: <https://github.com/lclevy/canon_cr3/blob/151c1a965775ef409ace17714c24ed491cfcf9c4/readme.md>
- Catalog page: <https://awesomerea.org/resources/canon-cr3-format-case/>
- Record JSON: <https://awesomerea.org/resources/canon-cr3-format-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/canon-cr3-format-case/index.md)

## Requirements & limits

- **Prerequisites:** Provide Canon CR3 or CR2 image files for the parser.
- **Limits:** The parser is described as experimental.
- **License:** GPL-3.0 license.

## Primary sources

1. <https://github.com/lclevy/canon_cr3/blob/151c1a965775ef409ace17714c24ed491cfcf9c4/readme.md>
2. <https://github.com/lclevy/canon_cr3/blob/151c1a965775ef409ace17714c24ed491cfcf9c4/heif.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.