{"updated": "2026-09-19", "mount": "canon-rf", "slug": "sigma-17-40mm-f1-8-dc", "name": "17-40mm F1.8 DC [キヤノンRF用]", "maker": "シグマ", "model": "", "band": "zoom-standard", "specs": {"メーカー": "シグマ", "焦点距離": "17〜40mm", "開放F値": "F1.8", "レンズタイプ": "標準ズーム・大口径ズームレンズ", "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": "AF/MF", "手ブレ補正": "-", "最短撮影距離": "28cm", "最大撮影倍率": "1：4.8", "フィルター径": "67mm", "最大径×長さ": "72.9x115.9mm", "重さ": "560g", "防塵・防滴": "防塵・防滴", "発売日": "2025/8/"}, "today": {"date": "2026-09-19", "rakuten": 124973, "yahoo": 124973, "cheapest": 124973, "cheapest_mall": "r"}, "history": [{"date": "2026-09-15", "rakuten": 124973, "yahoo": 124973}, {"date": "2026-09-16", "rakuten": 124973, "yahoo": 124973}, {"date": "2026-09-17", "rakuten": 124973, "yahoo": 124973}, {"date": "2026-09-18", "rakuten": 124973, "yahoo": 124973}, {"date": "2026-09-19", "rakuten": 124973, "yahoo": 124973}], "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/sigma-17-40mm-f1-8-dc/"}