Looks like lens problem. Below is a link with

来源: dudaan 于 2010-09-09 13:12:46 [] [旧帖] [给我悄悄话] 阅读数 : 0 (112 bytes)

similar problem. You may try different focus for diagnosis.
http://dcbbs.zol.com.cn/60/84_595965.html

所有跟帖： 

• Thank you. 拍出来的斑点是一样的。 Seems 是CCD上的污渍。 -雨婷她爹- ♂ 给 雨婷她爹 发送悄悄话 (11 bytes) () 09/09/2010 postreply 13:19:36

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