Light Field 

A Light Field is a captured collection of light rays, containing information about their orientation, direction, color and intensity. With this information Lytro can reconstruct the depth as well as color information of a captured scene so it can be recreated in the computer. Light Field data also allows creative changes to be made after an image has been captured. For example, you can set the aperture to adjust the depth of field after the scene has been photographed as a Light Field image. Read more about Light Fields here: http://blog.lytro.com/what-is-light-field/