{
  "slug": "canon-rf-75-300",
  "name": "RF75-300mm F4-5.6",
  "category": "lens",
  "specs": {
    "maker": "キヤノン",
    "released": "2025-05",
    "mount": "キヤノンRF",
    "format": "フルフレーム",
    "focal_length": "75-300mm",
    "max_aperture": "f/4-5.6",
    "elements": "9群13枚",
    "blades": 7,
    "min_focus_m": 1.5,
    "max_magnification": "0.25倍",
    "stabilization": "なし",
    "filter_mm": 58,
    "weight_g": 507,
    "size_mm": "71.2x146.1",
    "price_range": "約3.5万円前後"
  },
  "summary": "EF75-300mm F4-5.6 IIIの光学系を活用し、税込3万円台で望遠300mmを実現した普及価格帯の望遠ズーム。手ブレ補正は非搭載だが約507gと軽く、望遠撮影の入門に最適。運動会や野鳥観察をまず試してみたい人向けの1本。",
  "amazon_query": "キヤノン RF75-300mm F4-5.6",
  "construction_url": "https://personal.canon.jp/product/camera/rf/rf75-300-f4-56/spec",
  "mtf_url": "https://personal.canon.jp/product/camera/rf/rf75-300-f4-56/spec",
  "source_url": "https://personal.canon.jp/product/camera/rf/rf75-300-f4-56/spec",
  "retrieved_at": "2026-07-24",
  "product_url": "https://personal.canon.jp/product/camera/rf/rf75-300-f4-56"
}