LR-IMP-CAMERA-COVERAGE: measured image area for Nikon bodies without CropArea

Nikon bodies from before ~2016 record no CropArea, so the decoder kept
their whole sensor data, less trailing dark columns. Where that data
holds masked lines above black or optical black, they were developed as
a coloured or dark bar on that edge: the D7000 and D5100's 36 columns at
~600 (#976), the D800's 14 (#914, the top in portrait), the D600 / D610's
8 (#1236), the D3200's 46, and others.

MEASURED_BODIES (crates/raw/src/vendor/nef.rs) now gives 44 more model /
data size / depth groups the frame of their camera JPEG inside the data,
next to the D4, D7100 and D90 entries already there: D7000, D5100, D800,
D800E, Df, the D4's 12-bit mode, D3, D3S, D700, D300, D300S, D600, D610,
D810, D4S, D5600, Coolpix A, D3000, D40X, D60, D80, D2Xs, D200, D3200
and Nikon 1 V1; and, on best-guess frames short of the evidence rule,
each with a comment naming its evidence, the D3100 (3 of 4 clean files
agree), D5000 (4 of 5, and the D90's sensor), D40 (2 of 2), D50 and D70
(one file each, agreeing) and D70s (next to them, between pixels).
Every best-guess frame keeps the masked lines out by several pixels.
An entry matches model, data size and depth exactly. Bodies whose data
holds only picture beyond the camera frame get no entry and render as
before.

`cargo xtask raw-frame FILE...` (crates/engine/examples/raw_frame.rs)
measures a body: it aligns each raw's embedded camera JPEG with the
sensor data (half-size luminance, gradient correlation, sub-pixel peak;
weak, ambiguous or between-pixel peaks are flagged), counts the edge
lines that hold no picture and reports what the decoder's crop keeps
beyond the camera frame. A masked line is flat and its two CFA phases
agree within the noise or within 0.4% of white, so filler with a small
fixed offset between them (D90, D5000) counts. It prints entries only
with evidence: at least 3 clean files agreeing exactly, of the model
(12- and 14-bit pooled) or, with at least one of its own, with sibling
models of the same readout (data and JPEG size) that agree on the same
frame. On the D7500, which records its CropArea, it finds that area
exactly; it declines the Z f, whose JPEG is distortion-corrected. It
works for any make whose raw embeds a full-size camera JPEG: on Sony,
Canon CR2 / CR3, Pentax and Samsung files it finds the decoder's own
crop (relative to the active area).

Every Nikon raw on raw.pixls.us without CropArea was surveyed this way
(its 138 CC0 samples, plus 124 other publicly posted sample files; only
the measurements are committed). Bodies whose data holds only picture
beyond the frame need no entry (D750, D5300, D5500, D3300, D2X, D2Hs,
D3X, D5200, Coolpix P6000, Nikon 1 AW1 / J3 / V2 / V3, the D800's crop
modes); raw-parity.md lists them, and no longer claims every NEF
coding but HE decodes. measured_bodies_are_consistent checks every entry lies
inside its data and is listed once; measured_older_dx_bodies_image_area
covers the D200, D3200, Nikon 1 V1 and best-guess entries.

Fixes #976
Fixes #914
Fixes #1236

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

docs/raw-parity.md

@@ -1,6 +1,6 @@
 # RAW parity: cameras, formats, demosaic, colour and lens profiles
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-13 · **Change:** minor (Nikon Z 6II / Z 8 / Z f in-file distortion correction; Leica Q3 verified by a recorded check of 38 private DNGs; EOS R5 Mark II decoded and verified: CRX QP-map escape, odd-height planes) · **Target:** Adobe Lightroom Classic 15.5 / Lightroom 9.6 (Camera Raw 18.7)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-14 · **Change:** minor (Nikon image areas of bodies without CropArea surveyed and measured, issues #976 / #914 / #1236; NEF decode gaps listed; Nikon Z 6II / Z 8 / Z f in-file distortion correction; Leica Q3 verified by a recorded check of 38 private DNGs; EOS R5 Mark II decoded and verified: CRX QP-map escape, odd-height planes) · **Target:** Adobe Lightroom Classic 15.5 / Lightroom 9.6 (Camera Raw 18.7)
 
 Raw processing is the deepest single dimension of Lightroom parity: a photographer whose camera
 does not decode, or decodes with the wrong colour, cannot switch. This document measures it model by
@@ -93,7 +93,7 @@ committed table is stale.
 |---|---:|---:|---:|---|
 | Canon | 33% | 73% | 19% | 18 of the 22 popular bodies write CR3; 4 of them verified (M50, R8, R100, R5 Mark II), the rest at 0.6 |
 | Sony | 27% | 98% | 91% | bulk-checked |
-| Nikon | 16% | 91% | 12% | decoders cover every NEF coding but HE; few bodies verified |
+| Nikon | 16% | 91% | 12% | decoders cover NEF codings but HE and the compressed NEFs without a linearization table (D100, D1X, Coolpix P330 / P7700 / P7800, D4S and D810 small raw); few bodies verified; image area of every body without `CropArea` surveyed |
 | Fujifilm | 10% | 91% | 45% | |
 | Panasonic | 4% | 100% | 98% | bulk-checked |
 | OM / Olympus | 3% | 3% | 1% | compressed ORF |
@@ -125,6 +125,8 @@ checked, and Canon, the largest bucket, is the weakest of the big four.
 | NEF | uncompressed, lossless, lossy type 1 / 2, lossy after split | ✅ | D5100, D7000, D7500, Z f corpus; ~60 NEFs by hand; #633; D4 and D90 image area and white level measured against the camera JPEG |
 | NEF | packed 14-bit stored under a compressed tag (Z 6II uncompressed) | ⬜ | #769; fix in PR #671 (not merged) |
 | NEF | High Efficiency / HE★ (JPEG XS) | ⬜ | named, preview (#193); needs a JPEG XS decoder |
+| NEF | compressed without a linearization table (D100, D1X, Coolpix P330 / P7700 / P7800 NRW, D4S and D810 small raw) | ⬜ | refused as unsupported; one raw.pixls.us sample each |
+| NEF | image area of bodies without `CropArea` | 🟡 | 47 model / size / depth groups cropped to their measured camera frame (D800 #914, D7000 #976, Df, D3, D300, D600, D3200 …); the D3100, D5000, D40, D50, D70 and D70s on best-guess frames until more samples confirm them (evidence in each entry's comment, `MEASURED_BODIES` in `crates/raw/src/vendor/nef.rs`). Checked and needing no entry, their data holding only picture beyond the camera frame: D750, D5300, D5500, D3300, D2X, D2Hs, D3X, D5200, Coolpix P6000, Nikon 1 AW1 / J3 / V2 / V3 and the D800's DX / 1.2x / 5:4 modes. `cargo xtask raw-frame FILE…` measures a body |
 | ARW | uncompressed, cRAW (ARW2), lossless LJ92 (L / M / S) | ✅ | 86 bodies (#535); M/S black level 1024; the Hasselblad Lunar, a NEX-7 under Make HASSELBLAD, routed by Sony's raw coding (#1275) |
 | ARW | packed 12-bit (A900) | ✅ | one CC0 file; A850 unmeasured |
 | ARW | ARW6 Compressed / HQ (compression 32766; ILCE-7RM6) | ✅ | 8 CC0 files; 12-bit mode unsupported; `docs/arw6-compression.md` |
@@ -278,6 +280,7 @@ Beyond decoding:
 | 2026-10-12 | minor | Olympus E-10: as-shot white balance (`0x1017`/`0x1018`) and black level (`0x1012` in `0x102c` ValidBits units) from the main maker note, issue #1273; ΔE76 against its thumbnail 18.5 → 11.5, camera-look fit now accepted; counts unchanged |
 | 2026-10-13 | minor | Nikon D90 image area (4288 × 2848 at 10, 10) and white level (3830) measured on 10 of 550 NEFs from one body: its 42 filler columns no longer develop as a pink band |
 | 2026-10-12 | minor | Hasselblad Lunar verified (a Sony NEX-7 ARW under Make HASSELBLAD, now decoded): 236 verified, 232 preview; an uncompressed Leaf MOS is recognised as a raw (preview only) instead of opening as a greyscale image of its mosaic (#1275) |
+| 2026-10-14 | minor | Nikon: every body without `CropArea` on raw.pixls.us surveyed; 44 more model / size / depth groups cropped to their measured camera frame (#976, #914, #1236), 6 of them on best-guess frames; NEF row no longer claims every coding but HE decodes (compressed NEFs without a linearization table listed) |
 | 2026-10-10 | minor | Compressed ORF: pointer to the two Olympus patents that describe the method, as a clean-room starting point |
 | 2026-10-12 | minor | PEF without area tags: masked border rows and columns trimmed against the BlackPoint (issue #1271; KP, KF, K-3 Mark III, K-70, K-1, K-1 Mark II, K-S1, K-S2, 645Z); counts unchanged |
 | 2026-10-13 | minor | Lens profiles: Nikon in-file distortion (NikonNEFInfo `0xc7d5`) for the Z 6II, Z 8 and Z f, validated on 83 frames from three lenses and the CC0 Z f sample (`docs/nikon-lens-corrections.md`); lens score unchanged |