Panasonic GH1's 4/3-type Live MOS sensor with 12.1 megapixels gives you the best of both worlds: the superior image quality and the lower power consumption. It also adds a high-speed readout for recording HD movies. You can record images with a 4:3, 3:2 or 16:9 aspect ratio. In each, you get the same angle of view and same outstanding image quality.