More info : http://www.gamberini1907.com/cms/

The camera fires off up to six shots in about a second.
The Sony WX1's Handheld lowlight mode captures shots you have never seen before.
It does this by compositing multiple images of the scene. By first miraculously aligning the images (I watched my hand move during exposures without seeing any blur in the resulting composite) and then averaging the pixel values at the same location, the Sony WX1's Bionz processor manages to build a detailed image with very little noise.
http://www.imaging-resource.com/PRODS/DSCWX1/DSCWX1A.HTM