本帖最后由 gotham 于 2009-7-7 14:23 编辑 + N! ^8 a4 s9 B3 w
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It is believed that "1/focal length" is used as the minimum "safe" shutter$ [* p1 i' Y5 m. V# B
speed for handheld shots. But I believe there are always some "iron hands" existed, lol