prefocus lens

例句：

1. 1. The camera's prefocus lens is designed to capture the subjectbefore it moves.
   相机的预聚焦镜头设计用来在主体移动之前捕捉到它。
2. 2.In photography, a prefocus lens canhelp to blur background noise and focus onthe subject.
   在摄影中，预聚焦镜头可以帮助模糊背景噪音并专注于主题。
3. 3. The prefocus lens in this camerasystem allows for seamless transitionsbetween shots.
   这个相机系统中的预聚焦镜头允许无缝地切换镜头。