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kimclps:下來看看。不過如果照度是決定於物方視場角的話,那麼,90度半視場角的魚眼鏡頭 I'xc$f_+ 不就像面最大像高處照度等於零? Ucv7`W gr (2013-05-16 23:23) *Xnf}Ozx