1. A color filter array comprising: at least one first color filter; at least one second color filter; and at least one third color filter, wherein the third color filter is a luminance element and has a larger area than the at least one first or second color filter; wherein each filter is covered by a separate micro-lens, such that a micro-lens covering the at least one third color filter has a larger area than the micro-lenses covering the at least one first color filter or second color filter.