Your Sigma 18-200 OS is approximately as good.

来源: pieq314 于 2007-07-31 18:50:47 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (95 bytes)
回答: What aspect of 18-200 that you are unhappy about 由 pieq314 于 2007-07-31 13:53:29

In fact, yours has less distortion at 18mm, which is the more frequently used focal length.

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