{
  "slug": "sigma-20-14-dgdn",
  "name": "20mm F1.4 DG DN | Art",
  "category": "lens",
  "specs": {
    "maker": "シグマ",
    "released": "2022-08",
    "mount": "ソニーE / ライカL",
    "format": "フルフレーム",
    "focal_length": "20mm",
    "max_aperture": "f/1.4",
    "elements": "15群17枚",
    "blades": 11,
    "min_focus_m": 0.23,
    "max_magnification": "0.16倍",
    "stabilization": "なし",
    "filter_mm": 82,
    "weight_g": 630,
    "size_mm": "87.8x113.2",
    "weather_sealed": "対応",
    "price_range": "約12万円前後"
  },
  "summary": "20mm F1.4のミラーレス専用設計版で、星景・風景向けに作り込まれたArtラインの超広角単焦点。φ82mmのフロントフィルターに対応しつつ、リアフィルターホルダーやMFLスイッチなど天体撮影向けの機能を備える。同時発表の24mm F1.4 DG DNとともに、開放から画面周辺まで点像の乱れを抑えた描写が売り。",
  "amazon_query": "シグマ 20mm F1.4 DG DN Art ソニーE",
  "construction_url": "https://www.sigma-global.com/jp/lenses/a022_20_14/?tab=construction",
  "mtf_url": "https://www.sigma-global.com/jp/lenses/a022_20_14/?tab=construction",
  "source_url": "https://www.sigma-global.com/jp/lenses/a022_20_14/",
  "retrieved_at": "2026-07-24",
  "product_url": "https://www.sigma-global.com/jp/lenses/a022_20_14/"
}