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f\u002F1.8",[211,387,388],{},"APS-C：适马 56mm f\u002F1.4 或 35mm f\u002F1.4（等效约 50mm 视角）",[24,390,391],{},[34,392,393],{},"想拍风光：",[208,395,396],{},[211,397,398],{},"超广角变焦，如 16-35mm；配三脚架。",[24,400,401,402,405],{},"勿陷入「镜头收集」；",[34,403,404],{},"一支镜头拍透","比三支各拍一百张更有进步。",[27,407,408],{"id":408},"卡口与转接",[208,410,411,418],{},[211,412,413,414,417],{},"镜头卡口须与机身",[34,415,416],{},"匹配","（或官方转接环）。",[211,419,420],{},"转接第三方镜头可能失去自动对焦或防抖，初学者慎选。",[27,422,424],{"id":423},"滤镜了解即可","滤镜（了解即可）",[39,426,427,437],{},[42,428,429],{},[45,430,431,434],{},[48,432,433],{},"滤镜",[48,435,436],{},"用途",[55,438,439,447,455],{},[45,440,441,444],{},[60,442,443],{},"UV \u002F 保护镜",[60,445,446],{},"保护前镜片（争议较多，大光比场景可能眩光）",[45,448,449,452],{},[60,450,451],{},"ND 减光镜",[60,453,454],{},"白天慢门流水、视频快门控制（ND8≈3 档，ND64≈6 档，ND1000≈10 档）",[45,456,457,460],{},[60,458,459],{},"CPL 偏振镜",[60,461,462],{},"消除玻璃\u002F水面非金属反光，加深蓝天；效果与太阳角度有关，非万能",[24,464,465,466,469,470,473],{},"购买前确认",[34,467,468],{},"滤镜口径","（镜头前圈上的 ",[34,471,472],{},"φ"," 数字，如 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