verb (used with object) 1. to keep in existence or continuance; preserve; retain: to maintain good relations with neighboring countries. 2. to keep in an appropriate condition, operation, or force; keep unimpaired: to maintain order; to maintain public highways.
CMOS is a type of integrated circuit chip manufacturing process that can be used for many things, including digital camera image sensors.hey also require less power to use than do CCD sensors, which makes them popular in mobile devices. The drawback to CMOS sensors when used in cameras is that they tend to create photographs with a lot of image noise when used in lower light situations, though this is not always the case.
The world's smallest and lightest full-frame digital SLR (as of September 17, 2012) opens new doors to creative photographers. It's really the first EOS model simultaneously targeting the serious photo enthusiast, as well as a perfect step-up SLR for those seeking the image quality inherent in a full-frame camera. Full-frame is the key â the 20.2 million pixel CMOS sensor delivers excellent image quality, and ISOs ranging from 100~102,400.