# Contax N Digital: reconstructing a CCD Parameter Disc

> The Contax N Digital CCD Parameter Disc recreator rebuilds a camera-specific calibration disc from newly captured RAW dark and white frames. It derives white balance, defective-pixel and reference-image files, then combines them with colour matrices and tone curves extracted from another N Digital disc. The author reports comparison with a known disc but notes unresolved factory scaling details.

- Type: Case study
- Targets: Firmware
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/Oakman-Industries/ccd-disc-recreator>
- Primary source: <https://github.com/Oakman-Industries/ccd-disc-recreator/blob/abf3a450f0bdce38fb886b6b28212df590dbfcf1/README.md>
- Catalog page: <https://awesomerea.org/resources/contax-n-digital-ccd-disc-case/>
- Record JSON: <https://awesomerea.org/resources/contax-n-digital-ccd-disc-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/contax-n-digital-ccd-disc-case/index.md)

## Requirements & limits

- **Prerequisites:** Requires Python 3.8+, numpy, Pillow, a Contax N Digital, RAW reference captures and a model profile containing values obtained from an N Digital disc.
- **Prerequisites:** Creating an ISO requires an ISO creation tool; burning a physical disc requires a CD-R writer.
- **Limits:** The exact factory scaling of D.TIF and G.TIF remains uncertain; developed images should be checked.
- **License:** CC BY-NC-SA 4.0 license.

## Primary sources

1. <https://github.com/Oakman-Industries/ccd-disc-recreator/blob/abf3a450f0bdce38fb886b6b28212df590dbfcf1/README.md>
2. <https://github.com/Oakman-Industries/ccd-disc-recreator/blob/abf3a450f0bdce38fb886b6b28212df590dbfcf1/LICENSE>

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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.