十多年前有朋友Sigma镜头出毛病，他拆开后发现一个齿轮裂开了是塑料的, 由此印象中适马塑料，现在应该改进了

来源: 酒仙桥2 于 2023-08-14 14:32:20 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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