神牛折叠灰卡（白平衡校准卡）

评测依据

• review_count：8500
• rating_avg：4.7
• brand_reputation：0
• merchant_count：0
• price_range：[0,99]
• dimension：best_value
• sources：["京东","天猫"]
• time_range：{"from":"2026-06-26 02:46:36","to":"2026-06-26 02:46:36"}
• intros：{"brand_intro":"神牛是中国领先的摄影灯光及附件制造商，成立于2009年，总部位于深圳。品牌以高性价比和专业级性能著称，产品涵盖闪光灯、LED常亮灯、无线触发系统及各类摄影附件，远销全球100多个国家和地区，深受摄影爱好者和专业摄影师信赖。","product_intro":"神牛GC-30折叠灰卡采用18%中性灰标准，双面设计（灰面+白面），可折叠收纳，便于携带。适用于相机白平衡自定义校准、曝光参考及后期色彩校正。卡面采用哑光涂层，减少反光干扰，尺寸约30×30cm，适合人像、静物及视频拍摄场景。","key_specs":{"尺寸":"30×30cm（展开）","材质":"哑光涂层纸板+防水覆膜","灰度标准":"18%中性灰（反射率）","白面反射率":"90%","折叠后尺寸":"15×15cm","适用场景":"白平衡校准、曝光参考、视频调色"}}
• alt_products：[{"product_name":"神牛折叠灰卡（白平衡校准卡）","brand":"神牛（Godox）","model":"GC-30","price":39},{"product_name":"金贝折叠灰卡（双面白平衡校准卡）","brand":"金贝（Jinbei）","model":"JB-GC30","price":29.9}]
• kol_quotes：["\"神牛GC-30是入门级灰卡里的'卷王'，30块钱买不了吃亏。\"——摄影博主@相机笔记","\"折叠后塞进裤兜，外拍救急神器。\"——B站UP主@影视飓风"]
• scoring_breakdown：[{"source":"word_of_mouth","score":86.5,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍认为该灰卡性价比极高，折叠设计方便携带，灰面颜色准确，能有效解决复杂光源下的白平衡偏色问题。部分用户指出卡面边缘略有毛刺，但整体做工对得起价格。在室内混合光线下校准效果明显，视频拍摄中配合自定义白平衡功能可大幅减少后期调色工作量。","source_count":2}},{"source":"objective","score":81.35681818181818,"weight":0.5,"confidence":0.5,"details":{"rating_avg":4.7,"price":39,"wom_score":86.5}},{"source":"user_review","score":94,"weight":0.15,"confidence":1,"details":{"rating_avg":4.7,"review_count":8500,"source":"product_reviews_aggregate"}},{"source":"expert","score":82,"weight":0.15,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"sample":["\"神牛GC-30是入门级灰卡里的'卷王'，30块钱买不了吃亏。\"——摄影博主@相机笔记","\"折叠后塞进裤兜，外拍救急神器。\"——B站UP主@影视飓风"]}}]
• method_version：v2
• search_visual：null