本帖最后由 gotham 于 2009-7-7 14:23 编辑 S' T, t6 l5 Q0 E ]
9 N. W; |; h9 n! HIt is believed that "1/focal length" is used as the minimum "safe" shutter$ }7 `! ~* i x* k. ]5 A
speed for handheld shots. But I believe there are always some "iron hands" existed, lol