本帖最后由 gotham 于 2009-7-7 14:23 编辑 . |& g) S0 t2 v( n9 J % A/ a& d5 z& x8 `It is believed that "1/focal length" is used as the minimum "safe" shutter 4 z" W# }- C( Y' _# espeed for handheld shots. But I believe there are always some "iron hands" existed, lol