Focus: plane of focus; focal length; and depth of field.

焦距：焦点平面，焦距和景深。

youdao

The light-field approach means they will always be in focus (since the plane of focus can be moved at will after the photograph has been taken).

这种运用光场的方法，意味着他们将永远在焦点之上（因为在照片后拍摄之后可以随意移动焦平面）。

youdao

The study of this dissertation analyses the focus system technology, which is the key technology of curve plane surface lithographic fabrication techniques.

本文重点讨论了曲面光刻的关键技术——自动调焦系统，并对曲面工艺及光刻线条进行实验分析。

youdao

If, for some reason, some of the convergence points meet in front of, or behind, the focal plane, aspects of the resulting picture will be out of focus.

ECONOMIST: MONITOR

The mortars fired at the plane carrying New Jersey Rep. Donald Payne out of Mogadishu Airport on Monday were a sharp reminder that although the recent focus on Somalia has been on piracy, the bigger threat comes from terrorists operating onshore.

WSJ: Somali Extremists Have al Qaeda Ties