{
  "slug": "sigma-45-28-dgdn",
  "name": "45mm F2.8 DG DN | Contemporary",
  "category": "lens",
  "specs": {
    "maker": "シグマ",
    "released": "2019-07",
    "mount": "ソニーE / ライカL",
    "format": "フルフレーム",
    "focal_length": "45mm",
    "max_aperture": "f/2.8",
    "elements": "7群8枚",
    "blades": 7,
    "min_focus_m": 0.24,
    "max_magnification": "0.25倍",
    "stabilization": "なし",
    "filter_mm": 55,
    "weight_g": 235,
    "size_mm": "64x48.2",
    "price_range": "約5.5万円前後"
  },
  "summary": "後のIシリーズにつながる路線を最初に示した、Contemporaryラインの小型標準単焦点。全長48.2mm・235gでSIGMA fpとの組み合わせを想定したキットレンズにもなった。最短24cm・0.25倍まで寄れ、近接時のやわらかいボケ味を意図的に残した描写が持ち味。",
  "amazon_query": "シグマ 45mm F2.8 DG DN Contemporary ソニーE",
  "construction_url": "https://www.sigma-global.com/jp/lenses/c019_45_28_re/?tab=construction",
  "mtf_url": "https://www.sigma-global.com/jp/lenses/c019_45_28_re/?tab=construction",
  "source_url": "https://www.sigma-global.com/jp/lenses/c019_45_28_re/",
  "retrieved_at": "2026-07-24",
  "product_url": "https://www.sigma-global.com/jp/lenses/c019_45_28_re/"
}