Digital Zoom versus Optical Zoom

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As compact digital cameras started to become popular several years back, one of the ways manufacturers attempted to differentiate their products was by extending the zoom range. After all, the lens wasn't interchangeable as they are on SLR cameras, so if they could offer you more zoom for your buck than the next guy, you might just buy from them instead. But there are limits to what lenses can actually do, so someone came up with the idea of digital zoom. Don't fall for it, unless you really understand what you are getting....

More... (http://www.earthboundlight.com/phototips/digital-zoom-vs-optical-zoom.html)