{
  "slug": "canon-rf-50-18",
  "name": "RF50mm F1.8 STM",
  "category": "lens",
  "specs": {
    "maker": "キヤノン",
    "released": "2020-12",
    "mount": "キヤノンRF",
    "format": "フルフレーム",
    "focal_length": "50mm",
    "max_aperture": "F1.8",
    "elements": "5群6枚",
    "blades": 7,
    "min_focus_m": 0.3,
    "max_magnification": "0.25倍",
    "stabilization": "なし",
    "filter_mm": 43,
    "weight_g": 160,
    "size_mm": "69.2x40.5",
    "weather_sealed": "非対応",
    "price_range": "約3万円前後"
  },
  "summary": "約160gの小型軽量な単焦点レンズ。開放F1.8で、最短撮影距離0.30m・最大撮影倍率0.25倍のクォーターマクロ撮影に対応する。レンズ内手ブレ補正と防塵防滴は非搭載で、価格を抑えた入門向け。",
  "amazon_query": "キヤノン RF50mm F1.8 STM",
  "construction_url": "https://personal.canon.jp/product/camera/rf/rf50-f18/spec",
  "mtf_url": "https://personal.canon.jp/product/camera/rf/rf50-f18/spec",
  "source_url": "https://personal.canon.jp/product/camera/rf/rf50-f18/spec",
  "retrieved_at": "2026-07-24",
  "amazon_url": "https://www.amazon.co.jp/dp/B08MQBVFVW",
  "product_url": "https://personal.canon.jp/product/camera/rf/rf50-f18"
}