本帖最后由 gotham 于 2009-7-7 14:23 编辑 " p1 o3 b8 e. V: {' `/ d 3 D9 z N' x2 sIt is believed that "1/focal length" is used as the minimum "safe" shutter % f s7 v% M M1 V5 Vspeed for handheld shots. But I believe there are always some "iron hands" existed, lol