本帖最后由 gotham 于 2009-7-7 14:23 编辑 4 a( h& A. d" p2 i, p; c! M. e+ l
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It is believed that "1/focal length" is used as the minimum "safe" shutter ; _) O0 R# N, R3 [8 I( G5 y6 c6 A# s) @speed for handheld shots. But I believe there are always some "iron hands" existed, lol