本帖最后由 gotham 于 2009-7-7 14:23 编辑 ! n4 {2 o# |' o: i# {6 H0 N # j( X4 w4 W' R5 a9 Y, v! j" iIt is believed that "1/focal length" is used as the minimum "safe" shutter ! z& v; D w# H( q) z& M% e. Yspeed for handheld shots. But I believe there are always some "iron hands" existed, lol