DESC: Easy-to-use and easy-to-hold, the PowerShot A550 gives you 7.1 Megapixels, a 4x Optical Zoom Lens, an ISO 800 feature for expanded low-light shooting and a DIGIC II Image Processor with ISAPS technology for beautiful pictures and great performance. Plus, there's even a Fast Frame Rate Movie Mode. Power is never a problem, because the A550 uses standard "AA" batteries.