本帖最后由 gotham 于 2009-7-7 14:23 编辑 1 r! N& U9 z& j, ~$ [) z& V) A ' K" g1 ?" E! P, C. x3 eIt is believed that "1/focal length" is used as the minimum "safe" shutter 4 e6 h; O4 G2 h3 B( l' hspeed for handheld shots. But I believe there are always some "iron hands" existed, lol