Unlike other cameras, the Lytro Light Field Camera gives whole new life to still images by letting users focus after the shot is taken, rather than before. Basically, "it features an array of microlenses set a short distance in front of the sensor [and] instead of focusing light down into a single pixel as they would in a conventional camera, these are designed to split the information across multiple pixels, depending on the angle from which they've arrived." Click here to see more pictures.
The Lytro then saves your image in a proprietary file format to deliver a "living picture" that you can manipulate on your computer, much like a raw file. By manipulating key attributes, you can effectively change the focus of the image. That's right: After the image has been taken.[via DP Review - Wired]