本帖最后由 gotham 于 2009-7-7 14:23 编辑 5 B$ j) M5 ?; C, I( d " ]2 T& n9 P, e0 z s% L, {$ H, zIt is believed that "1/focal length" is used as the minimum "safe" shutter ( p6 |+ |( q3 \* P ~1 l9 g! Xspeed for handheld shots. But I believe there are always some "iron hands" existed, lol