IXY 200a, PS S200, IXUS v2: IXY DIGITAL 200a incorporates advanced optical technology to deliver outstanding image quality. The 200a features a 1/2.7" CCD sensor with 2 million effective-pixel resolution, an RGB primary color filter, and Canon's proprietary high-speed Imaging Engine digital signal-processing IC to deliver a high signal-to-noise ratio, high-definition images and faithful color reproduction.