本帖最后由 gotham 于 2009-7-7 14:23 编辑 9 _( I) ?' F _2 s/ w : z/ A$ t+ D2 G- ]# \6 B1 D. `It is believed that "1/focal length" is used as the minimum "safe" shutter ; B# f8 E4 O9 Z/ B( S& H5 @speed for handheld shots. But I believe there are always some "iron hands" existed, lol