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        "camera_sensor_mapping": "camera model/config recorded; sensor part number not established",
        "citation": {
          "authors": [
            "Olivier Burggraaff",
            "Norbert Schmidt",
            "Jaime Zamorano",
            "Klaas Pauly",
            "Sergio Pascual",
            "Carlos Tapia",
            "Evangelos Spyrakos",
            "Frans Snik"
          ],
          "doi": "10.1364/OE.27.019075",
          "organization": null,
          "title": "Standardized spectral and radiometric calibration of consumer cameras",
          "year": 2019
        },
        "green_channels": "G and G2 are distinct native CSV channels; article Fig. 10 plot averages green channels, but this import keeps the supplied channels separate",
        "measurement_method": "paper reports OL750-M-D double monochromator at NERC Field Spectroscopy Facility, 390-700 nm in 2 nm steps, 4 nm half-bandwidth, with precalibrated silicon photodiode source/throughput correction; exact per-file config remains uncertain",
        "normalization_evidence": "article Fig. 10 reports each camera curve normalized to its global maximum; exact file-level application not independently confirmed",
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