Eagles have famously sharp vision, and a group of scientists at the University of Stuttgart have managed to replicate that eagle-eye vision using a 3D printer to print four tiny plastic lenses of varying focal lengths directly onto a single image-sensing microchip. The lenses with longer focal lengths capture high detail over a narrow field of view, while the lenses with shorter focal lengths capture lower detail over a wider field of view. The entire four-lens camera measures less than 300 micrometers squared - about the width of three human hairs, and could potentially be used for tiny drones, sensors on driverless cars or even devices that could look inside the human body. Read more at 3DPrint.com: http://3dprint.com/165096/3d-printed-lenses-eagle-eye/