100-400 好過死馬150-500，死馬對焦慢，成像一般，據說機械也容易故障。。

來源: 牛山刀於 2012-12-06 12:02:48 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.