The EOS 20D has an extensive ISO range (from 100 to 1600 plus ISO 3200 in extended mode), and the sensor features a newly developed set of narrow-gap microlenses and noise-reduction circuits to improve performance at high ISOs and optimized photodiode configurations for improved performance at all ISOs. This results in larger, clearer, sharper, and more detailed photographs right from the start. Second- Generation DIGIC II Image Processor The EOS 20D benefits from Canon's in-house development: The DIGIC II image processor was developed originally for the EOS-1D Mark II and enhances every aspect of image capture. Information captured by the CMOS sensor is processed and assembled into images of exceptional quality by this new image processor. The new white-balance bracketing feature... Less