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.
Canon EOS. Canon EOS (Electro-Optical System) is an autofocus single-lens reflex camera (SLR) camera series produced by Canon Inc.. Introduced in 1987 with the Canon EOS 650, all EOS cameras used 35 mm film until October 1996 when the EOS IX was released using the new and short-lived APS film. In 2000, the D30 was announced, as the first digital SLR designed and produced entirely by Canon. Since 2005, all newly announced EOS cameras have used digital image sensors rather than film. The EOS line is still in production as Canon's current digital SLR (DSLR) range, and, with the 2012 introduction of the Canon EOS M, Canon's mirrorless interchangeable-lens camera (MILC) system. The name EOS was chosen for Eos, the Titan goddess of the dawn in Greek mythology, and is often pronounced as a word (/ Ë iË É s /), although some spell out the letters, reading it as an initialism.