最近用17-40拍攝的，不sharp，不知是否沒有IS和沒有tripod的原因。

來源: 於 2012-12-01 20:24:54 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

Just bought the book: digital photography: recommend to use tripod, low iso and remoter.

17-40 mm has no IS, could cause some shaking, which result in subtle blurry, not sharp.