本帖最后由 gotham 于 2009-7-7 14:23 编辑 ( {4 [0 m& v6 h , I2 N: F2 a1 n. A4 x o- pIt is believed that "1/focal length" is used as the minimum "safe" shutter 6 M3 Y" J" f t: H- W/ a7 vspeed for handheld shots. But I believe there are always some "iron hands" existed, lol