本帖最后由 gotham 于 2009-7-7 14:23 编辑 & D# U6 J0 F3 t1 f& D
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It is believed that "1/focal length" is used as the minimum "safe" shutter 1 m3 P) W- B# }speed for handheld shots. But I believe there are always some "iron hands" existed, lol