这是一种Pan 的技术 : f4 p( N6 t8 Q Z" W6 b5 Z' j }' G. F8 o
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 ], g+ A6 Y7 |' N3 M+ C