A scanning electron microscope (SEM) is a specialised scientific device used in photomicrography to produce highly magnified images of extremely small subjects. Unlike traditional optical microscopes, it uses a focused beam of electrons rather than light to scan the surface of a specimen, revealing fine structural details with exceptional clarity.
Scanning electron microscopes are widely used in scientific, medical, and industrial photography for capturing detailed images of microscopic subjects such as cells, insects, minerals, and manufactured components. Their ability to show texture and structure at very high magnifications makes them invaluable for research, analysis, and specialist photographic applications.