{
  "slug": "tamron-20-f28",
  "name": "20mm F/2.8 Di III OSD M1:2",
  "category": "lens",
  "specs": {
    "maker": "タムロン",
    "released": "2020-01",
    "mount": "ソニーE",
    "format": "フルフレーム",
    "focal_length": "20mm",
    "max_aperture": "F2.8",
    "elements": "9群10枚",
    "blades": 7,
    "min_focus_m": 0.11,
    "max_magnification": "0.5倍",
    "stabilization": "なし",
    "filter_mm": 67,
    "weight_g": 220,
    "size_mm": "73x64",
    "weather_sealed": "配慮",
    "price_range": "約5万円前後"
  },
  "summary": "220g・全長64mmの小型軽量な超広角単焦点。最短撮影距離0.11m・最大撮影倍率0.5倍と、超広角ながら被写体にぐっと寄れるのが特長。風景や建築を気軽に撮り始めたい人の最初の1本に向く。",
  "amazon_query": "タムロン 20mm F2.8 ソニーE",
  "amazon_url": "https://www.amazon.co.jp/dp/B07ZZHNXJH",
  "construction_url": "https://www.tamron.com/jp/consumer/lenses/f050/spec.html",
  "mtf_url": "https://www.tamron.com/jp/consumer/lenses/f050/spec.html",
  "source_url": "https://www.tamron.com/jp/consumer/lenses/f050/spec.html",
  "retrieved_at": "2026-07-24",
  "product_url": "https://www.tamron.com/jp/consumer/lenses/f050/spec.html"
}