可变焦距的镜头

例句：

1. 1. This camera has a variable focal length that allows you to zoom in on distant objects.
   这台相机具有可变焦距功能，可以放大远处物体。
2. 2. The photographer used a variable aperture lens to capture the perfect shot of the sunset.
   摄影师使用可变光圈镜头捕捉到了完美的日落画面。
3. 3.The cinematographer needed a variable focal length lens to achieve the desired effect during the filming.
   电影摄影师需要一台可变焦距镜头来实现拍摄时所需的效果。