Canon's proprietary CMOS sensors were formerly reserved for its storied EOS line. The PowerShot SX1 IS is the first PowerShot that gives you access to the astonishing imaging power of this technology. Unlike the CCD sensors on most digital cameras, CMOS sensors convert and amplify signals before they are transferred to the image processor. This enables the CMOS sensor to produce exceptionally clean image data, free of the stray signals that can mar images. The resulting images show a notable brilliance and clarity.