本帖最后由 gotham 于 2009-7-7 14:23 编辑 " D7 J& Z/ a G; W1 v
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It is believed that "1/focal length" is used as the minimum "safe" shutter 3 }" S9 t) T/ n- Xspeed for handheld shots. But I believe there are always some "iron hands" existed, lol