Add gear library and film capture metadata export with scan rig preserved in XMP

build.py

@@ -71,6 +71,7 @@
     "--add-data=icc:icc",
     "--add-data=media:media",
     "--add-data=crosstalk:crosstalk",
+    "--add-data=gear:gear",
     "--add-data=VERSION:.",
 ]
 

docs/USER_GUIDE.md

@@ -210,27 +210,41 @@ ICC profile for soft-proofing in the preview and (optionally) embedding in the e
 ---
 
 ## 11. Metadata Panel
-Custom film/process metadata plus per-image overrides of EXIF inherited from the source file.
+Archival metadata for the **original analog capture** — gear, process, and scanning — written into exported JPEG, TIFF, and PNG files as EXIF and embedded XMP.
 
-### Custom
+### Original analog gear
 
-These fields are written into the exported file's metadata (XMP/EXIF as supported by the format).
+Pick gear from your library (or a saved preset). Use **Manage…** to edit cameras, lenses, film stocks, and gear presets. Starter data is seeded into `~/NegPy/gear/` on first launch.
 
-*   **Film**: Film stock name — e.g. `Portra 400`, `HP5+`.
-*   **Format**: Film format dropdown — `35mm`, `120`, `4×5`, `8×10`, or `Other`.
-*   **Format (Custom)**: Free-text field that appears only when Format = `Other` (e.g. `6×7`).
-*   **Developer**: Developer name and dilution, e.g. `D-76 1+1`.
-*   **Push / Pull**: Process push or pull from `Push +3` down to `Pull -3`, with `Normal` in the middle.
-*   **Scanning**: Scanner or scanning method, e.g. `Noritsu HS-1800`.
-*   **Sync custom metadata to all files in batch export**: When on, all files in a batch export receive these custom metadata values.
+*   **Preset**: One-click camera + lens + film combination.
+*   **Camera / Lens / Film stock**: Dropdowns from the gear library. Changing any item clears the preset selection.
+*   **Clear**: Clears gear preset and library selections for this frame.
 
-### Inherited (from source)
+Structured fields for the **original capture** (camera, lens, film ISO) are written to **standard EXIF** when you set gear in the Metadata tab — so Lightroom and other DAMs show your film camera and lens. Scan-only tags from the source file (`FocalLengthIn35mmFormat`, scan exposure/ISO, etc.) are stripped so they do not mix with capture data. The **digitization rig** (DSLR, film scanner, copy-stand setup) is preserved in `negpy:Scan*` XMP tags only.
 
-Camera, Lens, and Exposure are populated read-only from the source file's EXIF. Each has a small lock-button on the right — click it to unlock the field and override the inherited value for this specific edit. Clicking again re-locks to the EXIF source.
+If you have **not** set capture gear, standard EXIF is left as-is (your scanner or DSLR remains visible in Lightroom) and scan data is mirrored to `negpy:Scan*` XMP. Process-only fields (developer, format) never overwrite camera/lens EXIF.
 
-*   **Camera**: `Make` + `Model` from the source EXIF, or your override.
-*   **Lens**: `LensModel` from EXIF, or override.
-*   **Exposure**: Formatted exposure string (e.g. `1/125s f/2.0 ISO 400`), or override.
+Capture fields are also written to `negpy:Capture*` in XMP for structured archival access.
+
+### Process
+
+*   **Format**: Film format — `35mm`, `120`, `4×5`, `8×10`, `110`, or `Other`.
+*   **Format (Custom)**: Shown when Format = `Other` (e.g. `6×7`).
+*   **Developer**: Developer and dilution, e.g. `D-76 1+1`.
+*   **Push / Pull**: `Push +3` … `Pull -3`, with `Normal` in the middle.
+
+### Scanning
+
+*   **Scanning**: Scan method or notes (written to `negpy:ScanMethod` in XMP). EXIF `Software` is always `NegPy`.
+*   **Sync custom metadata to all files in batch export**: When on, batch export uses the current metadata tab values for every file.
+
+### Exposure
+
+Optional **original capture** exposure (shutter, aperture, film ISO). Click the lock icon to edit a free-text string (e.g. `1/125s f/2.8 ISO 400`). Scan exposure from the source file appears in the preview under **Scan**, not here.
+
+### Metadata preview
+
+Collapsible live preview grouped by **Original capture**, **Scan**, **Process**, and **File** — the tag values embedded on export.
 
 ---
 

gear/cameras.json

@@ -0,0 +1,37 @@
+[
+  {
+    "id": "cam-canon-ae1p",
+    "make": "Canon",
+    "model": "AE-1 Program",
+    "displayName": "Canon AE-1 Program",
+    "notes": "35mm SLR, 1981-1987, FD mount."
+  },
+  {
+    "id": "cam-nikon-fm2",
+    "make": "Nikon",
+    "model": "FM2",
+    "displayName": "Nikon FM2",
+    "notes": "35mm fully mechanical SLR, F-mount."
+  },
+  {
+    "id": "cam-pentax-k1000",
+    "make": "Pentax",
+    "model": "K1000",
+    "displayName": "Pentax K1000",
+    "notes": "35mm mechanical SLR, K-mount."
+  },
+  {
+    "id": "cam-olympus-om1",
+    "make": "Olympus",
+    "model": "OM-1",
+    "displayName": "Olympus OM-1",
+    "notes": "35mm compact mechanical SLR, OM-mount."
+  },
+  {
+    "id": "cam-mamiya-645",
+    "make": "Mamiya",
+    "model": "M645 1000s",
+    "displayName": "Mamiya 645 1000s",
+    "notes": "Medium-format 6x4.5 SLR."
+  }
+]

gear/film_stocks.json

@@ -0,0 +1,67 @@
+[
+  {
+    "id": "film-portra-400",
+    "displayName": "Kodak Portra 400",
+    "manufacturer": "Kodak",
+    "stockName": "Portra 400",
+    "iso": 400,
+    "format": "35mm",
+    "colorType": "ColorNegative",
+    "notes": "Professional color negative, warm and gentle skin tones."
+  },
+  {
+    "id": "film-portra-160",
+    "displayName": "Kodak Portra 160",
+    "manufacturer": "Kodak",
+    "stockName": "Portra 160",
+    "iso": 160,
+    "format": "35mm",
+    "colorType": "ColorNegative"
+  },
+  {
+    "id": "film-gold-200",
+    "displayName": "Kodak Gold 200",
+    "manufacturer": "Kodak",
+    "stockName": "Gold 200",
+    "iso": 200,
+    "format": "35mm",
+    "colorType": "ColorNegative"
+  },
+  {
+    "id": "film-tri-x-400",
+    "displayName": "Kodak Tri-X 400",
+    "manufacturer": "Kodak",
+    "stockName": "Tri-X 400",
+    "iso": 400,
+    "format": "35mm",
+    "colorType": "B&W Negative"
+  },
+  {
+    "id": "film-hp5-400",
+    "displayName": "Ilford HP5 Plus",
+    "manufacturer": "Ilford",
+    "stockName": "HP5 Plus 400",
+    "iso": 400,
+    "format": "35mm",
+    "colorType": "B&W Negative"
+  },
+  {
+    "id": "film-ektachrome-e100",
+    "displayName": "Kodak Ektachrome E100",
+    "manufacturer": "Kodak",
+    "stockName": "Ektachrome E100",
+    "iso": 100,
+    "format": "35mm",
+    "colorType": "ColorSlide"
+  },
+  {
+    "id": "film-cinestill-800t",
+    "displayName": "CineStill 800T",
+    "manufacturer": "CineStill",
+    "stockName": "800T",
+    "iso": 800,
+    "format": "35mm",
+    "colorType": "ColorNegative",
+    "notes": "Tungsten-balanced color negative with characteristic halation."
+  }
+]

gear/gear_presets.json

@@ -0,0 +1,16 @@
+[
+  {
+    "id": "preset-ae1p-fd50-portra400",
+    "displayName": "AE-1P / FD 50 f/1.4 / Portra 400",
+    "cameraId": "cam-canon-ae1p",
+    "lensId": "lens-canon-fd-50-1.4",
+    "filmStockId": "film-portra-400"
+  },
+  {
+    "id": "preset-fm2-50-trix",
+    "displayName": "FM2 / Nikkor 50 f/1.8 / Tri-X 400",
+    "cameraId": "cam-nikon-fm2",
+    "lensId": "lens-nikkor-50-1.8",
+    "filmStockId": "film-tri-x-400"
+  }
+]

gear/lenses.json

@@ -0,0 +1,42 @@
+[
+  {
+    "id": "lens-canon-fd-50-1.4",
+    "displayName": "Canon FD 50mm f/1.4",
+    "lensModel": "FD 50mm f/1.4 S.S.C.",
+    "make": "Canon",
+    "focalLength": 50,
+    "maxAperture": 1.4
+  },
+  {
+    "id": "lens-canon-fd-28-2.8",
+    "displayName": "Canon FD 28mm f/2.8",
+    "lensModel": "FD 28mm f/2.8",
+    "make": "Canon",
+    "focalLength": 28,
+    "maxAperture": 2.8
+  },
+  {
+    "id": "lens-nikkor-50-1.8",
+    "displayName": "Nikkor 50mm f/1.8 AI-S",
+    "lensModel": "Nikkor 50mm f/1.8 AI-S",
+    "make": "Nikon",
+    "focalLength": 50,
+    "maxAperture": 1.8
+  },
+  {
+    "id": "lens-pentax-smc-50-1.7",
+    "displayName": "SMC Pentax-M 50mm f/1.7",
+    "lensModel": "SMC Pentax-M 50mm f/1.7",
+    "make": "Pentax",
+    "focalLength": 50,
+    "maxAperture": 1.7
+  },
+  {
+    "id": "lens-olympus-zuiko-50-1.8",
+    "displayName": "Olympus Zuiko 50mm f/1.8",
+    "lensModel": "Zuiko Auto-S 50mm f/1.8",
+    "make": "Olympus",
+    "focalLength": 50,
+    "maxAperture": 1.8
+  }
+]

negpy/desktop/controller.py

@@ -1083,6 +1083,16 @@ def delete_flatfield_profile(self, name: str) -> None:
         if self.session.repo.get_global_setting("flatfield_active_profile") == name:
             self.set_active_flatfield_profile("")
 
+    def load_gear_library(self):
+        from negpy.services.assets.gear import GearProfiles
+
+        return GearProfiles.load_library()
+
+    def save_gear_library(self, library) -> None:
+        from negpy.services.assets.gear import GearProfiles
+
+        GearProfiles.save_library(library)
+
     def set_flatfield_enabled(self, enabled: bool) -> None:
         """
         Per-image toggle to enable/disable flat-field correction for the current frame.

negpy/desktop/main.py

@@ -10,6 +10,7 @@
 from negpy.desktop.view.main_window import MainWindow
 from negpy.infrastructure.storage.repository import StorageRepository
 from negpy.services.assets.crosstalk import CrosstalkProfiles
+from negpy.services.assets.gear import GearProfiles
 from negpy.kernel.system.config import APP_CONFIG, BASE_USER_DIR
 from negpy.kernel.system.logging import get_logger, setup_logging
 from negpy.kernel.system.override import apply as apply_override
@@ -50,12 +51,14 @@ def _bootstrap_environment() -> None:
         APP_CONFIG.cache_dir,
         APP_CONFIG.user_icc_dir,
         APP_CONFIG.crosstalk_dir,
+        APP_CONFIG.gear_dir,
         APP_CONFIG.contact_sheet_templates_dir,
         APP_CONFIG.default_export_dir,
     ]
     for d in dirs:
         os.makedirs(d, exist_ok=True)
     CrosstalkProfiles.seed_example()
+    GearProfiles.seed_example()
 
 
 def main() -> None: