Canon's Digital Rebel cameras started a revolution in digital SLR photography by delivering an impressive combination of high performance and value. Their latest version, the Digital Rebel XSi, offers even more picture-taking power and advanced shooting options than ever. Its refinements include a newly designed image sensor, a larger 3" LCD monitor, "live" view modes for composing your shots directly on the LCD screen, and more.Advanced, self-cleaning CMOS image sensorCanon's impressive 12.2-megapixel image sensor offers a top resolution that's more than sufficient for cropping, enlarging, and printing photos at large sizes, while retaining extremely fine picture detail. It also employs high-sensitivity, low-noise CMOS technology to deliver pristine images with minimal grain. And this sensor is self-cleaning it uses ultrasonic vibrations to remove dust particles that can cause spots on your photos.