- (of an image) Sharp and clear with no fuzziness.
2013 July-August, Catherine Clabby, “Focus on Everything”, in American Scientist:
Not long ago, it was difficult to produce photographs of tiny creatures with every part in focus. That’s because the lenses that are excellent at magnifying tiny subjects produce a narrow depth of field.
- (idiomatic, of one's thoughts) Clearly perceived.
As he spoke the plan became in focus.
sharp and clearly visible