虚化背景一是镜头光圈，二是感光器面积。1系列感光器太小，而镜头光圈也太小。

来源: 用户名被占用了于 2013-12-25 19:17:45 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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