The PowerShot S3 IS is Canon’s third generation ‘super zoom’ compact digital camera. Successor 
to the popular PowerShot S2 IS, the 6-Megapixel camera features the same 12x optical zoom but boosts the sensitivity range up to ISO 800, has a larger 2.0-inch vari-angle screen and boasts several new features. It’s also a serious looking gunmetal grey.
The camera is compatible with MMC/SD cards, and comes supplied with a 16MB Canon card. Unfortunately, RAW image format isn’t supported and there’s still no no manual focus ring. Still images are saved as JPEGs (Exif 2.2) and movies as AVIs (Motion JPEG compression). Connectivity comprises USB 2.0 Hi-Speed and AV out (cable supplied). Power comes by the way of four AA Alkaline batteries (supplied) or NiMH batteries. An AC adapter is an optional extra. BIOS: The Quality Tech Guide