Nokia 808 PureView technique explained

Yesterday Nokia surprised the Mobile World Congress with an astonishing new camera phone: the 808 Pureview. It has a whopping 41MP sensor behind the Carl Zeiss lense, and turn the pictures you make into 3MP, 5MP of 8MP – your choice. But how does this work?

The technology used is called “picture oversampling”: combining the information of several pixels into one “superpixel”. Simply put, it appears to be a compression technique we all know from for example MP3 and AAC+. Let’s try to explain as simple as possible!