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    "abstract": "(1.1) This practice specifies the luminance (measured brightness) of the projection screens for drive-in theaters intended for the projection of motion-picture film at 24 frames/sec. (1.2) The practice defines luminance ratios among portions of the total screen area, and defines the acceptable variations as viewed from positions within the audience area (1.3) The practice applies to both diffusing and directional screens. (1.4) Recognizing the complexities and difficulties of drive-in projection, the practice describes criteria for evaluation of performance that is less than optimum, based upon a minimum luminance level and a maximum luminance variation.",
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      "source": "parsed",
      "updated": "2026-05-12T21:55:08.814Z"
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    "approvalDate": "1997",
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      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.814Z"
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    "copyright": {
      "holder": "Society of Motion Picture and Television Engineers, Inc.",
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        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.814Z"
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      "year": "1997",
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        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
        "source": "parsed",
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      "source": "parsed",
      "updated": "2026-05-12T21:55:08.814Z"
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    "docId": "SMPTE.RP12.1997",
    "docId$meta": {
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      "note": "Calculated from parsed/inferred metadata",
      "originalValue": null,
      "source": "manual",
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    "docLabel": "SMPTE RP 12:1997",
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      "updated": "2025-07-01T00:00:00Z"
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    "docNumber": "12",
    "docNumber$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
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    "docTitle": "Screen Luminance for Drive-In Theaters",
    "docTitle$meta": {
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      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docType": "Recommended Practice",
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      "confidence": "medium",
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    },
    "doi": "10.5594/SMPTE.RP12.1997",
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      "confidence": "medium",
      "source": "manual",
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    },
    "familyId": "12",
    "familyId$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.814Z"
    },
    "group": "smpte-27c-tc",
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      "confidence": "medium",
      "excludeChanges": true,
      "note": "TRIAGE: Committee history: 20f-tc absorbed into 27c-tc. Registry has the modern merged committee",
      "source": "manual",
      "updated": "2026-05-13T21:25:53.974Z"
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    "href": "https://doi.org/10.5594/SMPTE.RP12.1997",
    "href$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
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    "icsCodes": [
      {
        "code": "37.060.99",
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      }
    ],
    "icsCodes$meta": {
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      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.814Z"
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    "isbn": "978-1-61482-066-6",
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      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.814Z"
    },
    "keywords": [
      "Film",
      "Projection",
      "Projector",
      "Luminance"
    ],
    "keywords$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "pages": "1–3",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.814Z"
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      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.814Z"
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      "overridden": true,
      "source": "parsed",
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      "updated": "2025-07-01T00:00:00Z"
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        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.814Z"
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      "country": "USA",
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        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
        "source": "parsed",
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    "publisherLocation$meta": {
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      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
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    "references": {
      "bibliographic": [
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        "confidence": "medium",
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        "updated": "2025-07-01T00:00:00Z"
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      "normative": [
        "IESNA.RP16.1996"
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      "normative$meta": {
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        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
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      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-12-1997_1/rp0012-1997.xml)",
      "source": "parsed",
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        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
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      "amended": false,
      "amended$meta": {
        "confidence": "high",
        "note": "Parsed from wrapper #amendments",
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        "source": "resolved",
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        "confidence": "medium",
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        "updated": "2025-07-01T00:00:00Z"
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        "confidence": "high",
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