{
    "id": 1020,
    "source_image": "in/1020_f22.JPG",
    "source_av": 22.0,
    "target_images": [
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        "gt/1020/1020_f3.2.JPG",
        "gt/1020/1020_f4.0.JPG",
        "gt/1020/1020_f7.1.JPG",
        "gt/1020/1020_f20.JPG"
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    "target_avs": [
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        3.2,
        4.0,
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        20.0
    ],
    "focal_length": 50,
    "ISO": 100,
    "EV": 13.5,
    "focus_plane_distance": 1.25,
    "focus_plane_uncertainty": 0.050000000000000044
}