Most modern digital cameras use CMOS tech to capture light, but not all are equally capable. We break down the various types of CMOS sensors and differentiate them from CCD and Foveon chips.

System CMOS checksum bad–default configuration used.'” Robert says he’s tried contacting both Phoenix Technologies (makers of the BIOS) and Emachines, and neither company could help.

Backside-illuminated CMOS sensors can be found in everything from the Apple iPhone 4 and HTC Evo 4G to camcorders and point-and-shoots. Here's why you want one--and why you don't.