{"updated": "2026-09-19", "mount": "canon-rf", "slug": "sg-image-12mm-f2-8", "name": "12mm F2.8 ブラック [キヤノンRF用]", "maker": "SG-image", "model": "", "band": "wide", "specs": {"メーカー": "SG-image", "焦点距離": "12mm", "開放F値": "F2.8", "レンズタイプ": "単焦点・超広角単焦点レンズ", "対応マウント": "キヤノン RF", "フォーマット": "APS-C専用", "フォーカス": "MF", "手ブレ補正": "-", "最短撮影距離": "0.2m", "最大撮影倍率": "", "フィルター径": "", "最大径×長さ": "63x58mm", "重さ": "310g", "防塵・防滴": "-", "発売日": "2025/9/30"}, "today": {"date": "2026-09-19", "rakuten": 22500, "yahoo": 22500, "cheapest": 22500, "cheapest_mall": "r"}, "history": [{"date": "2026-09-15", "rakuten": 22500, "yahoo": 22500}, {"date": "2026-09-16", "rakuten": 22500, "yahoo": 22500}, {"date": "2026-09-17", "rakuten": 22500, "yahoo": 22500}, {"date": "2026-09-18", "rakuten": 22500, "yahoo": 22500}, {"date": "2026-09-19", "rakuten": 22500, "yahoo": 22500}], "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/sg-image-12mm-f2-8/"}