A display (10, 10A, 10B, 10C) comprising: two light modulating stages including spatial light modulators having a number of pixels, wherein a lower-resolution one of the spatial light modulators is imaged onto a higher-resolution one of the spatial light modulators, whereby light is modulated by the stages in series, to provide an image which has an increased dynamic range, wherein each pixel of the lower-resolution spatial light modulator (16, 16A) corresponds to a plurality of pixels of the higher-resolution spatial light modulator (20, 36), and a controller which is arranged to control the pixels (44, 42) of the spatial light modulators (16, 16A, 20, 36), wherein the controller is arranged to: - receive image data defining a desired image, wherein the image data indicates a desired luminance for an image area corresponding to each of the pixels of the higher-resolution spatial light modulator (20, 36), - set the pixels of the lower-resolution spatial light modulator (16, 16A), by determining an average, or weighted average, of a plurality of the desired luminance values for image areas corresponding to each pixel of the low-resolution spatial light modulator (16, 16A), - set the pixels of the higher-resolution spatial light modulator (20, 36), by dividing the desired luminance values by known intensity of light incident from the lower-resolution light modulator (16, 16A) on the corresponding pixels of the higher-resolution light modulator (20, 36). two light modulating stages including spatial light modulators having a number of pixels, wherein a lower-resolution one of the spatial light modulators is imaged onto a higher-resolution one of the spatial light modulators, whereby light is modulated by the stages in series, to provide an image which has an increased dynamic range, wherein each pixel of the lower-resolution spatial light modulator (16, 16A) corresponds to a plurality of pixels of the higher-resolution spatial light modulator (20, 36), and a controller which is arranged to control the pixels (44, 42) of the spatial light modulators (16, 16A, 20, 36), wherein the controller is arranged to: - receive image data defining a desired image, wherein the image data indicates a desired luminance for an image area corresponding to each of the pixels of the higher-resolution spatial light modulator (20, 36), - set the pixels of the lower-resolution spatial light modulator (16, 16A), by determining an average, or weighted average, of a plurality of the desired luminance values for image areas corresponding to each pixel of the low-resolution spatial light modulator (16, 16A), - set the pixels of the higher-resolution spatial light modulator (20, 36), by dividing the desired luminance values by known intensity of light incident from the lower-resolution light modulator (16, 16A) on the corresponding pixels of the higher-resolution light modulator (20, 36). - receive image data defining a desired image, wherein the image data indicates a desired luminance for an image area corresponding to each of the pixels of the higher-resolution spatial light modulator (20, 36), - set the pixels of the lower-resolution spatial light modulator (16, 16A), by determining an average, or weighted average, of a plurality of the desired luminance values for image areas corresponding to each pixel of the low-resolution spatial light modulator (16, 16A), - set the pixels of the higher-resolution spatial light modulator (20, 36), by dividing the desired luminance values by known intensity of light incident from the lower-resolution light modulator (16, 16A) on the corresponding pixels of the higher-resolution light modulator (20, 36).