"available light" meaning in English

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      "expansion": "available light (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "name": "Film",
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        {
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          "name": "Photography",
          "orig": "en:Photography",
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      ],
      "glosses": [
        "Light from sources that are not explicitly supplied by the photographer, such as natural light or pre-existing street lighting."
      ],
      "id": "en-available_light-en-noun-Bks~ba2U",
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      "raw_glosses": [
        "(film, photography) Light from sources that are not explicitly supplied by the photographer, such as natural light or pre-existing street lighting."
      ],
      "synonyms": [
        {
          "word": "practical light"
        }
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "arts",
        "broadcasting",
        "film",
        "hobbies",
        "lifestyle",
        "media",
        "photography",
        "television"
      ]
    }
  ],
  "word": "available light"
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Light from sources that are not explicitly supplied by the photographer, such as natural light or pre-existing street lighting."
      ],
      "links": [
        [
          "film",
          "film#Noun"
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        [
          "photography",
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      "raw_glosses": [
        "(film, photography) Light from sources that are not explicitly supplied by the photographer, such as natural light or pre-existing street lighting."
      ],
      "synonyms": [
        {
          "word": "practical light"
        }
      ],
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        "uncountable"
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        "arts",
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  ],
  "word": "available light"
}