noun
Physical or optical focus, such as in a camera, lens, or light beam.
カメラの焦点を合わせる。
Adjust the focus of the camera.
noun
focus; central point; point at issue
Abstract focus of attention, discussion, or activity; the main point or core issue.
議論の焦点は予算案に絞られた。
The focus of the discussion narrowed to the budget proposal.
noun
Technical term in geometry: the focus of a parabola, ellipse, etc.
放物線の焦点の座標を求めなさい。
Find the coordinates of the focus of the parabola.