Matthew James SivakandClaude Opus 5.5 7f97bdbb5f LR-IMP-PREVIEW-READ: thumbnails of Lightroom HDR/panorama DNGs develop from the file's reduced raw copies ...

A DNG that keeps reduced-resolution copies of its LinearRaw image (Lightroom merges keep 256, 512 and
2048 px ones) now develops a thumbnail or preview from the smallest copy that covers it, with the main
image's levels and colour and its crop scaled. A 23836 x 7078 drone panorama's 512 px render went from
38 s to 1.1 s. Copies are skipped when the main image has opcode lists, a linearization table or
black-level deltas, and for denoised photos.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-18 18:47:23 +02:00

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examples

Merge PR #1475 (rebased)

2026-10-15 01:13:36 -04:00

src

LR-IMP-PREVIEW-READ: thumbnails of Lightroom HDR/panorama DNGs develop from the file's reduced raw copies

2026-10-18 18:47:23 +02:00

tests

Merge PR #1475 (rebased)

2026-10-15 01:13:36 -04:00

Cargo.toml

Merge PR #1135 (rebased)

2026-10-15 00:53:45 -04:00