Focusing is the process of adjusting a camera lens so that the subject appears sharp and clear on the film or digital sensor (CCD/CMOS). Proper focusing ensures that the main elements of an image are well-defined and visually appealing.
Modern cameras typically offer automatic focus (AF) for convenience and speed, while some provide manual focus override (MF) for precise control. Fixed-focus (F) lenses maintain relative sharpness for subjects from about 1.5 meters to infinity, and certain models feature power focus (PF), which uses a motorized focusing ring for manual adjustments. Understanding focusing techniques is essential for achieving professional-quality images in a variety of shooting situations.