autofocus

This term describes a technical process of optical alignment. As a noun, it refers to the hardware or software mechanism itself, while as a verb, it describes the active process of the lens moving to find the point of sharpest focus. It is primarily used in photography, cinematography, and microscopy.

In professional contexts, the term is often contrasted with manual focus. While "autofocus" implies speed and convenience, it can carry a connotation of less precision compared to the deliberate control of manual adjustment.