An image display system includes an array of movable micromirrors each controlled by a mirror control system to oscillate between a fully ON and fully OFF positions. The mirror control system further includes at least electrode for applying voltages thereon according to an analog scale for controlling each of the micromirrors to oscillate substantially around a central angle of oscillation varying between the fully-On and fully-OFF angular positions, according to an analog angular scale corresponding to the analog scale of the voltage applied to the electrode(s). The brightness of a reflection from each of these micromirrors are therefore controllable according to an analog scale to generate a corresponding grayscale substantially according to an analog scale.