{
  "slug": "fujifilm-gf-250-4",
  "name": "フジノン GF250mmF4 R LM OIS WR",
  "category": "lens",
  "specs": {
    "maker": "富士フイルム",
    "released": "2018-05",
    "mount": "富士フイルムG",
    "format": "中判",
    "focal_length": "250mm",
    "max_aperture": "f/4",
    "elements": "10群16枚",
    "blades": 9,
    "min_focus_m": 1.4,
    "max_magnification": "0.22倍",
    "stabilization": "あり（5.0段 OIS）",
    "filter_mm": 82,
    "weight_g": 1425,
    "size_mm": "108x203.5",
    "weather_sealed": "対応",
    "price_range": "約43万円前後"
  },
  "summary": "35mm判換算198mm相当となる、GFレンズ初の本格望遠単焦点。スーパーEDレンズ1枚とEDレンズ2枚で色収差を抑え込み、1億画素クラスでも通用する解像力を発揮する。5.0段のOISとフォーカスプリセット機能、防塵防滴構造を備え、テレコンバーターGF1.4X TC WRを付ければ350mm（換算277mm相当）まで伸ばせる。",
  "amazon_query": "富士フイルム GF250mmF4",
  "construction_url": "https://www.fujifilm-x.com/ja-jp/products/lenses/gf250mmf4-r-lm-ois-wr/specifications/",
  "mtf_url": "https://www.fujifilm-x.com/ja-jp/products/lenses/gf250mmf4-r-lm-ois-wr/specifications/",
  "source_url": "https://www.fujifilm-x.com/ja-jp/products/lenses/gf250mmf4-r-lm-ois-wr/specifications/",
  "retrieved_at": "2026-07-24",
  "product_url": "https://www.fujifilm-x.com/ja-jp/products/lenses/gf250mmf4-r-lm-ois-wr/"
}