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http://www.dpreview.com/news/0801/08012411samsunggx20.asp
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With its powerful built-in Optical Picture Stabilisation (OPS) technology, the GX-20 prevents blurred pictures by shifting the CCD to counter any movement of the camera’s body. This function is designed to minimize shake by oscillating the image sensor vertically and horizontally – eliminating the need for additional anti-shake lenses.