Pentax Optio A20 10MP Digital Camera with 3x Optical Zoom and Shake Reduction 10 Megapixel effective for still images at up to 3648x2736 pixel resolution and video or movie images up to 640x480 Compact-type digital still and movie camera with built-in zoom lens, autofocus, auto exposure, auto-flash and Shake Reduction Lens Features - Focal Length - 7.9mm - 23.7mm; 35mm Equivalent - 37.5mm -112.5mm; Aperture Range - F2.8 - F5.4 Optical Zoom - 3X; Digital Zoom - 4X; Combined - 12X Light Metering Method - TTL metering with choice of - Multi-segment, Center-weighted & Spot meter Storage Media - Approx. 24MB built-in memory, SD memory card removable - we recommend purchasing an Optional 1GB SD memory card. It will allow you to store a lot more Video and images, as well as take advantage of the camera's high Resolution abilities.