本帖最后由 gotham 于 2009-7-7 14:23 编辑 : N0 d: P U. q9 \' c
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It is believed that "1/focal length" is used as the minimum "safe" shutter ; b& X- Q2 r& |7 cspeed for handheld shots. But I believe there are always some "iron hands" existed, lol