本帖最后由 gotham 于 2009-7-7 14:23 编辑 - @3 e# Z6 @8 F# P' r! p, a% \+ {4 F. A; i% U# M j
It is believed that "1/focal length" is used as the minimum "safe" shutter1 y: I. Z$ U8 F
speed for handheld shots. But I believe there are always some "iron hands" existed, lol