The lens uses the latest 3-D design technology and large aspherical elements, which creates a unique optical layout. It maintains high resolution from the center to each corner of the picture. Moreover, by adopting a new coating technology and the new simulation system, the focus breathing has been diminished and the light quantity of the picture corners has been maintained. The HJ14ex4.2 also features an ultimately minimized color aberration, ghosting and picture distortion.