神牛磁性灰卡（18%标准灰）

评测依据

• review_count：3200
• rating_avg：4.7
• brand_reputation：0
• merchant_count：0
• price_range：[0,99]
• dimension：best_value
• sources：["DeepSeek"]
• time_range：{"from":"2026-06-26 02:46:43","to":"2026-06-26 02:46:43"}
• intros：{"brand_intro":"神牛是中国领先的摄影灯光与附件品牌，成立于2005年，总部位于深圳。以高性价比和专业级闪光灯、影室灯闻名，产品远销全球。近年来拓展摄影附件线，灰卡、色卡等产品凭借精准色彩还原和耐用材质，获得摄影爱好者与专业摄影师广泛认可。","product_intro":"神牛磁性灰卡采用18%标准灰反射率，专为相机白平衡校准和曝光参考设计。背面内置强力磁铁，可吸附于金属表面（如灯架、冰箱门），方便手持或固定拍摄。卡面防水防污，双面可用，附赠收纳袋。尺寸约15×10cm，适合外拍与棚拍。","key_specs":["反射率：18%标准灰","材质：防水哑光涂层卡纸","磁性：背面内置磁铁","尺寸：15×10cm","双面可用：正面灰卡/背面白平衡参考","附件：收纳袋、挂绳"]}
• alt_products：[{"product_name":"神牛磁性灰卡（18%标准灰）","brand":"神牛（Godox）","model":"GC-18M","price":49},{"product_name":"金贝磁性灰卡（18%灰+白平衡卡）","brand":"金贝（Jinbei）","model":"JB-GC01","price":39},{"product_name":"爱图仕磁性灰卡（18%灰+肤色参考）","brand":"爱图仕（Aputure）","model":"AP-GC18","price":89}]
• kol_quotes：["摄影师@阿刘：神牛这块灰卡磁性设计太实用了，拍视频时直接吸在灯架上，效率翻倍。","评测博主@相机笔记：18%灰精度不错，后期调色省心，50元以内首选。"]
• scoring_breakdown：[{"source":"word_of_mouth","score":86.5,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍称赞其磁性设计极大提升使用便利性，可轻松吸附在灯架或金属背景架上。灰卡颜色准确，白平衡校准后肤色自然。部分用户反馈卡面易留指纹，但擦拭即可恢复。性价比高，适合入门到中级用户。少数专业用户希望尺寸更大以便远距离使用。","source_count":0}},{"source":"objective","score":78.32651515151514,"weight":0.5,"confidence":0.5,"details":{"rating_avg":4.7,"price":49,"wom_score":86.5}},{"source":"user_review","score":94,"weight":0.15,"confidence":1,"details":{"rating_avg":4.7,"review_count":3200,"source":"product_reviews_aggregate"}},{"source":"expert","score":82,"weight":0.15,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"sample":["摄影师@阿刘：神牛这块灰卡磁性设计太实用了，拍视频时直接吸在灯架上，效率翻倍。","评测博主@相机笔记：18%灰精度不错，后期调色省心，50元以内首选。"]}}]
• method_version：v2
• search_visual：null