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zoom lens
Last modified: Monday, August 31, 2009
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.
Digital Video: Why Digital Video? The shortest answer to the question "Why digital video?" is "Because analog video is dead." This isn't advertising hyperbole, its a simple fact. It may take a few years for analog cameras to completely expire, but their demise is foreordained.
Webopedia's Quick Reference: The Digital Camera Picture If you can't keep up with advances in digital camera, you're not alone. We help you make sense of megapixels, zero in on the zooms (digital, optical and total) and delve into everything from price points to paper to printers.
