1. A pixel array comprising: a pixel; a single pixel luminance filter positioned over the pixel, the single pixel luminance filter comprising a plurality of colors, wherein the size of each of the colors of the single pixel luminance filter is proportional to a share of the associated color of the single pixel luminance filter that is used to calculate a luminance value for the pixel, and wherein the luminance value for the pixel is determined using only filtered electromagnetic radiation received through the single pixel luminance filter.