{"updated": "2026-09-19", "mount": "canon-rf", "slug": "canon-rf45mm-f1-2-stm", "name": "RF45mm F1.2 STM", "maker": "キヤノン", "model": "", "band": "standard", "specs": {"メーカー": "キヤノン", "焦点距離": "45mm", "開放F値": "F1.2", "レンズタイプ": "単焦点・大口径標準単焦点レンズ", "対応マウント": "キヤノン RF", "フォーマット": "フルサイズ対応", "フォーカス": "AF/MF", "手ブレ補正": "○", "最短撮影距離": "0.45m", "最大撮影倍率": "0.13倍", "フィルター径": "67mm", "最大径×長さ": "78x75mm", "重さ": "346g", "防塵・防滴": "-", "発売日": "2025/11/"}, "today": {"date": "2026-09-19", "rakuten": 56800, "yahoo": 59500, "cheapest": 56800, "cheapest_mall": "r"}, "history": [{"date": "2026-09-15", "rakuten": 56800, "yahoo": 59500}, {"date": "2026-09-16", "rakuten": 56800, "yahoo": 59500}, {"date": "2026-09-17", "rakuten": 56800, "yahoo": 59500}, {"date": "2026-09-18", "rakuten": 56800, "yahoo": 59500}, {"date": "2026-09-19", "rakuten": 56800, "yahoo": 59500}], "license": "CC BY 4.0（数値）", "method": "lens.match の規則で確かめた出品の最安。推定なし", "page": "https://kurashigram.com/lens/canon-rf/canon-rf45mm-f1-2-stm/"}