本帖最后由 gotham 于 2009-7-7 14:23 编辑 5 Y$ v) V9 G# S ; h1 \7 y7 {8 DIt is believed that "1/focal length" is used as the minimum "safe" shutter * z: H& E' p3 j7 k7 d0 a1 Espeed for handheld shots. But I believe there are always some "iron hands" existed, lol