A display comprising: an illuminator (14, 25) comprising an array (14, 25) of light sources (16, 26, 26R, 26G, 26B), the light sources (16, 26, 26R, 26G, 26B) including light sources of a plurality of colors; a modulator disposed to be illuminated by the illuminator (14, 25), the modulator comprising a plurality of pixels, each having a plurality of elements (13R, 13G, 13B); an illuminator driver circuit (19, 28), the illuminator driver circuit (19, 28) independently controlling intensities of the light sources (16, 26, 26R, 26G, 26B) of each of the plurality of colors, and, within a particular color, independently controlling intensities of the light sources (16, 26, 26R, 26G, 26B) in each of a plurality of areas of the illuminator (14, 25), wherein the light sources (16, 26, 26R, 26G, 26B) in each of the plurality of areas of the illuminator (14, 25) illuminate a corresponding area of the modulator with light having a color and intensity controlled by the illuminator driver circuit (19, 28); and, a modulator driver circuit connected to control modulation of the light from the illuminator (14, 25) by the pixel elements (13R, 13G, 13B); wherein the array (14, 25) comprises first light sources (16, 26, 26R, 26G, 26B) configured to emit light of a first color and second light sources (16, 26, 26R, 26G, 26B) configured to emit light of a second color, the light emitted by the light sources (16, 26, 26R, 26G, 26B) of each color is distributed according to a corresponding point spread function representing the luminance as a function of a position along the modulator, characterised in that the point spread function of each of the first light sources has a full width at half maximum wider than the full width at half maximum of the point spread function of each of the second light sources, in that each of the first light sources have greater light output than the second light sources, and in that the first light sources are more widely spaced apart from one another in the array than the second light sources. an illuminator (14, 25) comprising an array (14, 25) of light sources (16, 26, 26R, 26G, 26B), the light sources (16, 26, 26R, 26G, 26B) including light sources of a plurality of colors; a modulator disposed to be illuminated by the illuminator (14, 25), the modulator comprising a plurality of pixels, each having a plurality of elements (13R, 13G, 13B); an illuminator driver circuit (19, 28), the illuminator driver circuit (19, 28) independently controlling intensities of the light sources (16, 26, 26R, 26G, 26B) of each of the plurality of colors, and, within a particular color, independently controlling intensities of the light sources (16, 26, 26R, 26G, 26B) in each of a plurality of areas of the illuminator (14, 25), wherein the light sources (16, 26, 26R, 26G, 26B) in each of the plurality of areas of the illuminator (14, 25) illuminate a corresponding area of the modulator with light having a color and intensity controlled by the illuminator driver circuit (19, 28); and, a modulator driver circuit connected to control modulation of the light from the illuminator (14, 25) by the pixel elements (13R, 13G, 13B); wherein the array (14, 25) comprises first light sources (16, 26, 26R, 26G, 26B) configured to emit light of a first color and second light sources (16, 26, 26R, 26G, 26B) configured to emit light of a second color, the light emitted by the light sources (16, 26, 26R, 26G, 26B) of each color is distributed according to a corresponding point spread function representing the luminance as a function of a position along the modulator, characterised in that the point spread function of each of the first light sources has a full width at half maximum wider than the full width at half maximum of the point spread function of each of the second light sources, in that each of the first light sources have greater light output than the second light sources, and in that the first light sources are more widely spaced apart from one another in the array than the second light sources.