本帖最后由 gotham 于 2009-7-7 14:23 编辑 7 U$ F+ W' M4 a% X6 H; Y! z, [6 \( Z7 h R6 V' F- V8 B+ U ?# h
It is believed that "1/focal length" is used as the minimum "safe" shutter : O; \0 h# p& Qspeed for handheld shots. But I believe there are always some "iron hands" existed, lol