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    "abstract": "The accurate reproduction of object contrast by the lens image is the optical desideratum in photography. To fulfill this requirement, it is necessary that each area in the image shall receive light from only the corresponding area of the object. If any light other than true image-forming light falls onto the image, the contrast relations will be altered. A uniform distribution of non-image forming light over the image results in a decrease of image contrast.",
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    "authors": [
      "Clifton Tuttle",
      "H. E. White"
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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    "copyright": {
      "holder": "Society of Motion Picture and Television Engineers, Inc.",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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        "version": "smpte-journal-article-nlm@v1"
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      "year": "1927",
      "year$meta": {
        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
        "source": "parsed",
        "updated": "2026-05-22T19:19:44.900Z",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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      "note": "Derived from DOI 10.5594/J06599",
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      "updated": "2026-05-22T19:19:44.900Z",
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    "docLabel": "Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 31, September 1927)",
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    "docTitle": "Factors Which Affect the Contrast of a Lens Image in the Motion Picture Camera",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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      "updated": "2026-05-22T19:19:44.900Z",
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      "confidence": "high",
      "note": "Constructed from DOI 10.5594/J06599",
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      "updated": "2026-05-22T19:19:44.900Z",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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        "updated": "2026-05-22T19:19:44.900Z",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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      "updated": "2026-05-22T19:19:44.900Z",
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    "journalAcronym": "MIJR",
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      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/08182015 BACKFILE JOURNAL FRESH/smptej_11_31/MIJR15Vol11No31.xml)",
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      "version": "smpte-journal-issue-xml@v1"
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    "number": "31",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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      "updated": "2026-05-22T19:19:44.900Z",
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    "pages": "591–600",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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      "note": "Normalised to registry \"SMPTE\" convention from NLM publisher-name (The Society of Motion Picture and Television Engineers)",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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        "updated": "2026-05-22T19:19:44.900Z",
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      "country": "USA",
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        "confidence": "high",
        "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/08182015 BACKFILE JOURNAL FRESH/smptej_11_31/MIJR15Vol11No31.xml)",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J06599.xml)",
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      "updated": "2026-05-22T19:19:44.900Z",
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        "confidence": "medium",
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    "volume": "11",
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