Pixelated tunable color filter

Methods and apparatus using generating multiple color images in a single exposure. In one implementation, an imaging apparatus is provided that includes an image sensor array including a plurality of image sensor elements. The imaging apparatus also includes a dispersive element configured to rotate incident linearly polarized radiation by a rotation angle to produce rotated linearly polarized radiation having at least two polarization angles, wherein the rotation angle is deter mined based, at least in part, on a wavelength of the incident linearly polarized radiation. The imaging apparatus also includes a pixelated polarizing filter configured to receive the rotated linearly polarized radiation from the dispersive element and selectively pass the rotated linearly polarized radiation to the image sensor array, wherein the rotated linearly polarized radiation is selectively passed based on the polarization angle of the rotated linearly polarized radiation.