Digital Camera Glossary. Letter O. Optical Zoom. Onboard memory.

Digital Camera Glossary. Letter O.

Annotation: Optical Zoom, Onboard memory.

Optical zoom: Also known as "telephoto" or "true zoom," optical zoom works like the zoom on a traditional film camera. Elements within the lens move, reducing the field of view and making the object you're shooting appear closer.

Onboard memory: Some digital cameras have built-in memory in lieu of (or in addition to) removable media to store their images. Onboard memory is less expensive (and less flexible) than removable memory, and it's usually seen only in entry-level cameras.

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