本帖最后由 gotham 于 2009-7-7 14:23 编辑 - A! i4 o, l3 T4 B# A# o 3 R+ ^& Q H; dIt is believed that "1/focal length" is used as the minimum "safe" shutter 4 |) x! d3 }9 _) R; uspeed for handheld shots. But I believe there are always some "iron hands" existed, lol