本帖最后由 gotham 于 2009-7-7 14:23 编辑 : [; f- a3 H) ~. v& q V, M( f% K 8 E2 K6 w+ l2 kIt is believed that "1/focal length" is used as the minimum "safe" shutter # c" F- d6 @- E+ O1 S# Z& [speed for handheld shots. But I believe there are always some "iron hands" existed, lol