Canon has launched a 4-megapixel camera that uses new imaging technology.

The PowerShot G3 features a Digital Imaging Core (DIGIC) processor that delivers high definition and fast processing, the company claims.

Canon consumer imaging marketing manager Mark Robinson said: "DIGIC has allowed us to improve image quality and camera performance, enabling us to meet the increasing photographic needs of the advanced amateur and semi-professional user."

DIGIC works by combining control of signal processing, JPEG compression, memory-card control and LCD monitor display.

The PowerShot G3 also features 12 shooting modes, including manual control, selectable focusing points and metering modes. It costs £699.