V2EX focus ring

Focus Ring

释义 Definition

focus ring(名词,常用作短语)

  1. (摄影/摄像)对焦环:镜头上用于手动调节焦点、使画面清晰的可旋转环。
  2. (界面/无障碍)焦点环:在软件或网页中,用于提示“键盘焦点”所在控件的高亮边框/光圈样式(如输入框周围的发光轮廓)。

发音 Pronunciation

/foks r/

例句 Examples

Turn the focus ring until the subject looks sharp.
把对焦环转到主体看起来清晰为止。

With the lens in manual mode, she adjusted the focus ring carefully to keep the actor’s eyes crisp while the background stayed soft.
镜头切到手动模式后,她小心调节对焦环,让演员的眼睛保持锐利清晰,同时让背景仍然柔和虚化。

词源 Etymology

focus 源自拉丁语 focus(“炉灶、火点”),后来在光学语境中引申为“光线汇聚的焦点”,再进一步发展出“注意力集中、聚焦”等含义。ring 源自古英语 hring(“环、圈”)。两者组合成 focus ring,字面即“用于聚焦的环”,在摄影器材上指镜头的对焦环;在界面设计中则借用“环/轮廓”的视觉意象,指示当前焦点位置。

文学与作品 Notable Works

  • Langford’s Basic Photography(摄影教材类经典著作中常用该术语讲解手动对焦与镜头结构)
  • The Manual of Photography(摄影技术参考书中常在镜头操作章节出现 focus ring
  • *Apple Human Interface Guidelines (macOS)*(界面规范与开发文档中常用 focus ring 指代控件的键盘焦点高亮样式)
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