parallax
noun [ U ] uk/ˈpær.ə.læks/ us/ˈper.ə.læks/
（因观察位置改变而引起的）视差（量）
the effect by which the position of an object seems to change when it is looked at from different positions
Parallax error is always a concern with point-and-shoot cameras. 视差误差是傻瓜相机一直存在的一个问题。