这是一种Pan 的技术 & l7 V) G. f2 _" X( O) n% A$ F( i0 c2 [6 V. }. R. |/ f4 c
The basic idea behind panning as a technique is that you pan your camera along in time with the moving subject and end up getting a relatively sharp subject but a blurred background.5 U" m7 }3 C" L n' `