Vocab Bloom Hub

focal length

/ˈfəʊkəl lɛŋkθ/

翻译: 镜头(或透镜)中心到成像平面(如相机传感器或胶片)之间的距离,当被摄物体处于对焦状态时,通常以毫米为单位;它决定视角大小和成像放大倍率。

1 个条目

phrase

/ˈfəʊkəl lɛŋkθ/C1formaltechnical
  • zh镜头(或透镜)中心到成像平面(如相机传感器或胶片)之间的距离,当被摄物体处于对焦状态时,通常以毫米为单位;它决定视角大小和成像放大倍率。

The distance between the lens and the image sensor or film when the subject is in focus, typically measured in millimeters. It determines the angle of view and magnification of an image.

  1. Optical distanceC1formal

    The distance between the center of a lens or curved mirror and its focal point, where parallel rays of light converge.

    zh焦距

    • A shorter focal length gives a wider field of view.
    • The camera lens has a focal length of 50 millimeters.
    • Adjusting the focal length changes the magnification of the image.