本帖最后由 gotham 于 2009-7-7 14:23 编辑 ; J3 O2 V; Y% r, S' u " T& M1 H: V/ [4 C( `. V8 EIt is believed that "1/focal length" is used as the minimum "safe" shutter. r8 n, P3 i) t9 x4 t% G* F
speed for handheld shots. But I believe there are always some "iron hands" existed, lol