本帖最后由 gotham 于 2009-7-7 14:23 编辑 9 r4 p* S$ d# K P " E0 K" T+ d# p/ v" q) r& l5 rIt is believed that "1/focal length" is used as the minimum "safe" shutter " g0 f1 w% f/ p' c, ?! o# ~4 v4 w9 t/ Y0 espeed for handheld shots. But I believe there are always some "iron hands" existed, lol