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词汇 back focus
释义

Definition of back focus in English:

back focus

noun
Photography
  • The distance between the back of a lens and the image of an object at infinity.

    〔摄〕后焦点

    Example sentencesExamples
    • If the focal length is positive and the back focus B is longer than the focal length, the result is a reversed telephoto, or retrofocus.

Definition of back focus in US English:

back focus

noun
Photography
  • The distance between the back of a lens and the image of an object at infinity.

    〔摄〕后焦点

    Example sentencesExamples
    • If the focal length is positive and the back focus B is longer than the focal length, the result is a reversed telephoto, or retrofocus.
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