本帖最后由 gotham 于 2009-7-7 14:23 编辑 + t# L& E9 P+ L2 g9 S ( R; r$ ?2 J* x8 x- m& c- V* ^, {It is believed that "1/focal length" is used as the minimum "safe" shutter $ ~9 T* W1 h4 K7 G0 |) v& ospeed for handheld shots. But I believe there are always some "iron hands" existed, lol