1. A light sensor for capturing an image of a scene, comprising: a multi-cell photo-detector composed of a plurality of cell arrays of cells, each cell defining a pixel of an image and being configured to generate an electric signal representative of an intensity of light impinging thereon; a plurality of lenses, each configured to capture a similar field of view of the scene and focus the light coming from the scene on the cell arrays, respectively, wherein each of said lenses is placed at a different physical distance from one of the plurality of cell arrays to define different depths of field, said depths of field being staggered.