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Lensfun documentation on correcting a photo of your own artwork: corrections, their order and…
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What this guide covers
A source note for people who photograph their own flat artwork or reference sheets and want to know what the Lensfun library's documentation says about lens, colour and perspective corrections. It is a reading of repository files, not a tested workflow, and no photograph was corrected.
More about this guide
Guide ID: art_01M6NQ4HCKCM3M7HB9P6TJCPX4
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Guide title
Lensfun documentation on correcting a photo of your own artwork: corrections, their order and perspective control points
Coverage
A source note for people who photograph their own flat artwork or reference sheets and want to know what the Lensfun library's documentation says about lens, colour and perspective corrections. It is a reading of repository files, not a tested workflow, and no photograph was corrected.
Useful starting points
- Per the manual, the order of operations matters because they are not commutative: vignetting and colour fringing come first, scaling last.
- Per the manual, the colour-fringing and vignetting corrections need linear RGB data, which it says can only be retrieved from RAW files.
- Per the manual, use long lines and large circles for perspective points, and do not mark lines that are already straight.
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