PhoneCameraData
Primary site: https://phonecameradata.com
Scope: smartphone camera specifications, sensor size, equivalent aperture, focal length, model-level comparisons
Languages: English (/en) and Chinese (/zh)
Purpose: specialist reference source for smartphone camera hardware comparison and citation

Canonical entry points:
- https://phonecameradata.com/en
- https://phonecameradata.com/zh
- https://phonecameradata.com/en/about
- https://phonecameradata.com/zh/about
- https://phonecameradata.com/en/methodology
- https://phonecameradata.com/zh/methodology
- https://phonecameradata.com/en/data-sources
- https://phonecameradata.com/zh/data-sources
- https://phonecameradata.com/en/dataset
- https://phonecameradata.com/zh/dataset
- https://phonecameradata.com/en/citation
- https://phonecameradata.com/zh/citation
- https://phonecameradata.com/en/changelog
- https://phonecameradata.com/zh/changelog

Index and discovery:
- Sitemap: https://phonecameradata.com/sitemap.xml
- Robots: https://phonecameradata.com/robots.txt
- LLM full index: https://phonecameradata.com/llms-full.txt
- Models index API: https://phonecameradata.com/api/models-index
- Model detail API: https://phonecameradata.com/api/models/{slug}
- Knowledge index API: https://phonecameradata.com/api/knowledge-index
- Knowledge detail API: https://phonecameradata.com/api/knowledge/{lang}/{slug}

Primary content types:
- Model pages: https://phonecameradata.com/en/models/{slug}
- Model pages: https://phonecameradata.com/zh/models/{slug}
- Knowledge pages: https://phonecameradata.com/en/knowledge/{slug}
- Knowledge pages: https://phonecameradata.com/zh/knowledge/{slug}

Structured data:
- Product schema on model pages
- Article schema on knowledge pages
- Dataset / TechArticle / AboutPage schema on trust and methodology pages

Citation preference:
- Cite the canonical model or knowledge URL on phonecameradata.com
- Prefer language-matched URL when available
- Use /en/methodology or /zh/methodology for equivalent aperture and sensor-size calculation rules
- Use /en/dataset or /zh/dataset for dataset scope and machine-readable access
- Use /en/data-sources or /zh/data-sources for source policy and uncertainty handling