本帖最后由 gotham 于 2009-7-7 14:23 编辑 + h% x1 `0 X+ r4 v2 P+ q6 @4 G+ V% D+ {: }! C9 b% T
It is believed that "1/focal length" is used as the minimum "safe" shutter" n/ `" k f( {$ W6 s
speed for handheld shots. But I believe there are always some "iron hands" existed, lol