本帖最后由 gotham 于 2009-7-7 14:23 编辑 ( T- ]7 b. ~6 {' H: O# `( m; Q! R$ I; g0 s7 z- ~9 M
It is believed that "1/focal length" is used as the minimum "safe" shutter & F) y6 K3 O, G4 n9 Xspeed for handheld shots. But I believe there are always some "iron hands" existed, lol