佳能增距镜 Extender EF 1.4x III

评测依据

• review_count：2100
• rating_avg：4.9
• brand_reputation：0
• merchant_count：0
• price_range：[2000,4999]
• dimension：best_quality
• sources：["DeepSeek"]
• time_range：{"from":"2026-06-26 02:42:38","to":"2026-06-26 02:42:38"}
• intros：{"brand_intro":"Canon（佳能）是日本全球领先的影像与光学产品制造商，成立于1937年。其EF镜头系统享誉世界，Extender系列增距镜专为佳能L级长焦镜头优化，采用萤石镜片和SWC镀膜技术，以卓越的光学性能和坚固的做工成为专业摄影师的首选。","product_intro":"佳能Extender EF 1.4x III增距镜专为佳能EF卡口长焦镜头设计，如70-200mm f/2.8L IS III、300mm f/2.8L IS II等。采用4组7片结构，含1片萤石镜片和SWC亚波长结构镀膜，透光率高达99.5%。支持全自动对焦、IS防抖及EXIF传输，镜身防尘防滴溅，重量约225g。","key_specs":["倍率：1.4x","透光率：99.5%","镜头结构：4组7片","重量：225g","卡口：佳能EF","萤石镜片：是"]}
• alt_products：[{"product_name":"佳能增距镜 Extender EF 1.4x III","brand":"Canon","model":"Extender EF 1.4x III","price":3500},{"product_name":"尼康增距镜 TC-14E III","brand":"Nikon","model":"TC-14E III","price":3200},{"product_name":"适马增距镜 TC-1401 1.4x","brand":"Sigma","model":"TC-1401","price":2580}]
• kol_quotes：["@佳能发烧友：Extender 1.4x III是佳能系统最值得买的配件。","@摄影大师：搭配70-200mm f/2.8，画质堪比原生400mm镜头。"]
• scoring_breakdown：[{"source":"word_of_mouth","score":98.69999999999999,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户评价其画质表现无可挑剔，搭配L级镜头时锐度和色彩还原达到顶级水准。对焦速度与原生镜头一致，暗光下依然可靠。少数用户认为价格偏高，但普遍认为这是专业摄影的必备投资。京东好评率99.8%，被广泛誉为增距镜之王。","source_count":0}},{"source":"objective","score":98.28,"weight":0.5,"confidence":0.8,"details":{"rating_avg":4.9,"review_count":2100,"wom_score":98.69999999999999}},{"source":"user_review","score":98,"weight":0.15,"confidence":1,"details":{"rating_avg":4.9,"review_count":2100,"source":"product_reviews_aggregate"}},{"source":"expert","score":80.80000000000001,"weight":0.15,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"matched_count":2,"base_score":82,"weighted_score":80,"sample":["@佳能发烧友：Extender 1.4x III是佳能系统最值得买的配件。","@摄影大师：搭配70-200mm f/2.8，画质堪比原生400mm镜头。"]}}]
• method_version：v3
• search_visual：null