This is a very fast-moving subject.

This is primarily intended for the recording of fast-moving subjects such as sports action.

To keep pace with these fast-moving subjects, undergraduates become involved in industrially-relevant projects and research in later years of the course.

Lenses with longer focal lengths generally have a shallower in-focus area than shorter focal-length lenses, which can make it hard to shoot a fast-moving subject.

I had twelve pictures altogether; with a little judicious cutting and a dubbed-in commentary, they made up into fast-moving twenty-minute short subjects.

Capturing fast-moving subjects is often a challenge.

But the real world of fast-moving subjects often doesn't leave time for such tactics.

No more worrying about fast-moving subjects moving out of focus, or other objects or people in a scene confusing a camera's autofocus system.

Very short shutter speeds can be used to freeze fast-moving subjects, for example at sporting events.

The effective exposure time can be much shorter than for central shutters, at the cost of some distortion of fast-moving subjects.