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zoom lens

In digital cameras and digital video recording devices, a zoom lens let you to select any focal length within the len's range. The lens changes the angle of view and its magnifying power based on the zooming range selected.

Zooming out gives the photographer a wide-angle view that captures a wide expanse of a scene. When you zoom in, the field of view narrows and you can focus on small portions of the scene without having to physically moving closer.

See "A Quick Guide to Digital Cameras" in the Quick Reference section of Webopedia.
See also Megapixel.net for news, reviews and a active community for digital camera and photography enthusiasts.

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